U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
OAV

Best Priced 2021 GMC Sierra 1500 in Maryland

The best priced 2021 GMC Sierra 1500 in Maryland are vehicles currently listed below their typical market range, based on local comparables and days-on-lot velocity. These vehicles are ranked based on how far below their expected market range they fall and how quickly similar vehicles are selling.

Market snapshot · May 22, 2026

OAV.io analyzes millions of vehicle listings using RetailVision™ market data to identify vehicles priced below expected market ranges based on year, make, model, trim (when available), and local comparables.

OAV helps determine if a vehicle is a good deal by comparing it to similar listings and expected sell-through rates.

According to RetailVision™ data, OAV is currently analyzing approximately 17 2021 GMC Sierra 1500 across the Maryland market, refreshed daily.

Total 2021 GMC Sierra 1500

17

Average Price

$37,089

Price Range

$27,490–$46,676

Avg Days on Lot

46

How OAV Identifies Deals

OAV uses RetailVision™ market data to analyze current listings, historical sales patterns, and local market conditions. Vehicles are ranked based on pricing versus comparable listings in the same region and expected sell-through velocity.

This helps identify undervalued vehicles and determine whether a listing represents a great deal or a good deal in its local market.

Powered by OAV's patented vehicle market standardization technology (U.S. Patent No. 12,236,477).

Learn how OAV identifies Demand-Verified Deals™

What makes OAV different

Unlike traditional listing sites, OAV ranks vehicles using price-to-market analysis, local comparable ranges, days-on-lot, comparable count, and demand and velocity signals from similar vehicles. That helps shoppers identify listings that are not just cheap, but competitively priced against the local market.

2021 GMC Sierra 1500 market summary — Maryland

MarketMaryland
Body type2021 GMC Sierra 1500
Listings analyzed17
Average price$37,089
Price range$27,490 – $46,676
Average days on lot46 days
Ranking signalsPrice-to-market, year, mileage, days-on-lot, comparable count
Refresh cadenceDaily

Best Overall 2021 GMC Sierra 1500 in Maryland

Top picks ranked by composite score: PTM gap, year, mileage, days on lot, and comparable count.

Cheapest Great Deals on 2021 GMC Sierra 1500 in Maryland

Lowest-priced listings flagged as Great Deal by OAV's Price-to-Market analysis.

OAV answers these questions

What are the best priced 2021 GMC Sierra 1500 in Maryland?
OAV ranks 2021 GMC Sierra 1500 in Maryland by how far below their typical market range they are listed, using local comparable vehicles and days-on-lot velocity. Listings labeled Great Deal sit below the comparable range; Fair Price sits within it.
Which 2021 GMC Sierra 1500 in Maryland are priced below market?
2021 GMC Sierra 1500 flagged as undervalued are priced below the typical range for comparable 2021 GMC Sierra 1500 in Maryland. The "Top Deals" section on every market page surfaces these first, with the percentage gap from the typical range shown per listing.
Which listings have high sell-through velocity in Maryland?
OAV compares each listing's days-on-lot against the local market average. Listings selling meaningfully faster than the local average are tagged "high demand in this market" — a leading indicator of competitive pricing and strong shopper interest.
Which 2021 GMC Sierra 1500 are undervalued compared with local comparables in Maryland?
OAV's Price-to-Market analysis compares every listing against similar 2021 GMC Sierra 1500 in Maryland, using year, make, model, trim, mileage, and condition signals. Undervalued listings price below the typical comparable range and are surfaced as Great Deals.

How OAV works — common questions

How does OAV find cars priced below market?
OAV compares each listing against similar vehicles currently for sale in the local and regional market — using year, make, model, trim, mileage, and condition signals — to compute a price-to-market range. Listings priced below the bottom of their typical range are flagged as undervalued, surfaced as Great Deals, and shown first in every market view.
What makes a Demand-Verified Deal different from a cheap listing?
A cheap listing is just one that's priced low. A Demand-Verified Deal is priced below market AND backed by sell-through evidence — the listing's days-on-lot relative to similar vehicles tells us whether the local market is actually buying at that price band. Combining the price signal with the demand signal separates real deals from listings that are cheap because nobody wants them.
Does OAV use local market comparables?
Yes. Every listing is benchmarked against millions of comparable retail listings in the same metro and broader region — never national averages. A truck priced $2,000 below market in Dallas is compared against Dallas trucks; an EV priced below market in Los Angeles is compared against LA EVs. Local comparables make the price-to-market math meaningful.
Why does days-on-lot matter when shopping for used cars?
Days-on-lot is the strongest leading indicator of competitive pricing in a local market. A listing that turns over faster than the local average is, in aggregate, priced more attractively to buyers — which usually correlates with being below the typical price-to-market range. Slower-than-average days-on-lot can be the opposite signal: priced for the seller's expectations, not the market's.
Can OAV help find trucks, SUVs, or EVs priced below market?
Yes — body-type-specific market views are available for trucks, SUVs, sedans, and EVs in every major U.S. metro and ZIP code. Each view ranks listings by how far below the typical range they're priced, includes Demand-Verified Deals where sell-through evidence supports the label, and shows local comparable ranges + days-on-lot per listing. Start at the homepage or any city or ZIP page.

Explore more markets

All 2021 GMC Sierra 1500 in Maryland

Showing the 24 best-priced GMC Sierra 1500 from 17 active listings.

No Photo

2021 GMC Sierra 1500

White Marsh, MD

Fair Price
$39,95063,000 mi

Market: $37,948$46,676

Fairly priced — in line with the typical market range in the White Marsh market for similar vehicles · 51 days on lot (based on current market benchmarks)

White Marsh, MD

No Photo

2021 GMC Sierra 1500

Baltimore, MD

Fair Price
$40,80062,466 mi

Market: $37,948$46,676

Fairly priced — in line with the typical market range in the Baltimore market for similar vehicles · 9 days on lot (based on current market benchmarks)

Baltimore, MD

No Photo

2021 GMC Sierra 1500

Edgewood, MD

Fair Price
$39,00062,466 mi

Market: $35,995$44,376

Fairly priced — in line with the typical market range in the Edgewood market for similar vehicles · 8 days on lot (based on current market benchmarks)

Edgewood, MD

No Photo

2021 GMC Sierra 1500

Woodlawn, MD

Fair Price
$39,00062,466 mi

Market: $37,948$46,676

Fairly priced — in line with the typical market range in the Woodlawn market for similar vehicles · 9 days on lot (based on current market benchmarks)

Woodlawn, MD

No Photo

2021 GMC Sierra 1500

Capitol Heights, MD

Overpriced
$46,67650,373 mi

Market: $33,495$44,376

Priced ~20% above the typical market range in the Capitol Heights market for similar vehicles (based on current market benchmarks)

Capitol Heights, MD

No Photo

2021 GMC Sierra 1500

Salisbury, MD

Unscored
$46,67650,373 mi

Market: $46,676$46,676

Salisbury, MD

No Photo

2021 GMC Sierra 1500

Cumberland, MD

Unscored
$37,98971,591 mi

Market: $39,495$39,995

Cumberland, MD

No Photo

2021 GMC Sierra 1500

White Marsh, MD

Fair Price
$37,99839,469 mi

Market: $26,700$38,694

Fairly priced — in line with the typical market range in the White Marsh market for similar vehicles · 33 days on lot (based on current market benchmarks)

White Marsh, MD

No Photo

2021 GMC Sierra 1500

Glen Burnie, MD

Unscored
$31,29973,406 mi

Market: $26,700$38,694

Glen Burnie, MD

No Photo

2021 GMC Sierra 1500

Owings Mills, MD

Unscored
$31,29973,406 mi

Market: $26,700$38,694

Owings Mills, MD

No Photo

2021 GMC Sierra 1500

Salisbury, MD

Unscored
$31,49873,406 mi

Market: $32,798$38,694

Salisbury, MD

No Photo

2021 GMC Sierra 1500

Woodlawn, MD

Fair Price
$30,80059,283 mi

Market: $26,700$38,694

Fairly priced — in line with the typical market range in the Woodlawn market for similar vehicles · 20 days on lot (based on current market benchmarks)

Woodlawn, MD

No Photo

2021 GMC Sierra 1500

Bowie, MD

Great Deal
$26,70091,151 mi

Market: $27,490$38,694

Competitively priced ~19% below the typical range in the Bowie market compared to similar vehicles · 41 days on lot (based on current market benchmarks)

Bowie, MD

No Photo

2021 GMC Sierra 1500

Brandywine, MD

Fair Price
$27,49991,151 mi

Market: $27,490$38,694

Fairly priced — in line with the typical market range in the Brandywine market for similar vehicles · 41 days on lot (based on current market benchmarks)

Brandywine, MD

No Photo

2021 GMC Sierra 1500

California, MD

Unscored
$26,70091,151 mi

Market: $26,700$26,700

California, MD

No Photo

2021 GMC Sierra 1500

Fort Washington, MD

Great Deal
$26,70091,151 mi

Market: $27,490$38,694

Competitively priced ~19% below the typical range in the Fort Washington market compared to similar vehicles · 41 days on lot (based on current market benchmarks)

Fort Washington, MD

No Photo

2021 GMC Sierra 1500

White Marsh, MD

Fair Price
$27,490108,830 mi

Market: $26,700$38,694

Fairly priced — in line with the typical market range in the White Marsh market for similar vehicles · 211 days on lot (based on current market benchmarks)

White Marsh, MD

No Photo

2021 GMC Sierra 1500

Glen Burnie, MD

Overpriced
$38,69461,775 mi

Market: $26,700$37,998

Priced ~20% above the typical market range in the Glen Burnie market for similar vehicles (based on current market benchmarks)

Glen Burnie, MD

No Photo

2021 GMC Sierra 1500

Pittsville, MD

Unscored
$39,29964,532 mi

Market: $39,299$39,299

Pittsville, MD

No Photo

2021 GMC Sierra 1500

Preston, MD

Unscored
$39,29964,532 mi

Market: $39,299$39,299

Preston, MD

No Photo

2021 GMC Sierra 1500

Bel Air, MD

Fair Price
$38,50081,773 mi

Market: $35,995$44,376

Fairly priced — in line with the typical market range in the Bel Air market for similar vehicles · 17 days on lot (based on current market benchmarks)

Bel Air, MD

No Photo

2021 GMC Sierra 1500

Cockeysville, MD

Fair Price
$38,50081,773 mi

Market: $36,379$44,376

Fairly priced — in line with the typical market range in the Cockeysville market for similar vehicles · 17 days on lot (based on current market benchmarks)

Cockeysville, MD

No Photo

2021 GMC Sierra 1500

Laurel, MD

Fair Price
$38,50081,773 mi

Market: $33,495$46,676

Fairly priced — in line with the typical market range in the Laurel market for similar vehicles · 17 days on lot (based on current market benchmarks)

Laurel, MD

No Photo

2021 GMC Sierra 1500

North Bethesda, MD

Fair Price
$38,50081,773 mi

Market: $33,495$46,676

Fairly priced — in line with the typical market range in the North Bethesda market for similar vehicles · 17 days on lot (based on current market benchmarks)

North Bethesda, MD

Other vehicle markets in Maryland