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

Best Priced Buick in Illinois

The best priced Buick vehicles in Illinois 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 · July 1, 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 6,500 Buick vehicles across the Illinois market, refreshed daily.

Total Buick

6,353

Average Price

$32,566

Price Range

$1,995–$74,990

Avg Days on Lot

90

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 from Cars.com, AutoTrader, and Edmunds

Cars.com, AutoTrader, and Edmunds are vehicle-listing marketplaces where shoppers browse inventory. OAV is the answer-engine layer above the marketplace: it ranks vehicles using price-to-market analysis, local comparable ranges, days-on-lot, comparable count, and demand and velocity signals from similar vehicles — surfacing the ones priced below their typical market range and supported by recent sell-through. OAV is built for the next car-shopping behavior: asking which vehicle to buy, not just browsing inventory.

Buick market summary — Illinois

MarketIllinois
Body typeBuick
Listings analyzed6,353
Average price$32,566
Price range$1,995 – $74,990
Average days on lot90 days
Ranking signalsPrice-to-market, year, mileage, days-on-lot, comparable count
Refresh cadenceDaily

OAV answers these questions

What are the best priced Buick vehicles in Illinois?
OAV ranks Buick vehicles in Illinois 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 Buick vehicles in Illinois are priced below market?
Buick vehicles flagged as undervalued are priced below the typical range for comparable Buick vehicles in Illinois. 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 Illinois?
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 Buick vehicles are undervalued compared with local comparables in Illinois?
OAV's Price-to-Market analysis compares every listing against similar Buick vehicles in Illinois, 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 Buick in Illinois

Showing the 24 best-priced Buick from 6,353 active listings.

No Photo

1996 Buick Roadmaster

Gilberts, IL

Unscored
$17,800151,230 mi

Market: $17,800$17,800

Gilberts, IL

No Photo

1995 Buick Roadmaster

North Chicago, IL

Unscored
$36,50031,465 mi

Market: $36,500$36,500

North Chicago, IL

No Photo

2004 Buick Park Avenue

Naperville, IL

Unscored
$15,80099,123 mi

Market: $15,800$15,800

Naperville, IL

No Photo

2002 Buick Park Avenue

Naperville, IL

Unscored
$15,800105,258 mi

Market: $15,800$15,800

Naperville, IL

No Photo

2002 Buick Park Avenue

Naperville, IL

Unscored
$11,800144,880 mi

Market: $11,800$11,800

Naperville, IL

No Photo

2001 Buick Park Avenue

Lake in the Hills, IL

Unscored
$11,99560,812 mi

Market: $11,995$11,995

Lake in the Hills, IL

No Photo

2001 Buick Park Avenue

Naperville, IL

Unscored
$11,800102,948 mi

Market: $11,800$11,800

Naperville, IL

No Photo

2003 Buick Park Avenue

Macomb, IL

Unscored
$8,40789,656 mi

Market: $8,407$8,407

Macomb, IL

No Photo

1989 Buick Reatta

McHenry, IL

Unscored
$12,60045,113 mi

Market: $12,600$12,600

McHenry, IL

No Photo

1990 Buick Reatta

Homer Glen, IL

Unscored
$11,59558,990 mi

Market: $11,595$11,595

Homer Glen, IL

No Photo

1990 Buick Reatta

Pecatonica, IL

Unscored
$8,99595,819 mi

Market: $8,995$8,995

Pecatonica, IL

No Photo

2016 Buick LaCrosse

Crestwood, IL

Unscored
$7,488139,383 mi

Market: $7,488$7,488

Crestwood, IL

No Photo

2016 Buick LaCrosse

Chicago, IL

Unscored
$9,995132,081 mi

Market: $9,995$9,995

Chicago, IL

No Photo

2013 Buick LaCrosse

St. Charles, IL

Unscored
$12,90056,930 mi

Market: $12,900$12,900

St. Charles, IL

No Photo

2016 Buick LaCrosse

Roselle, IL

Unscored
$9,495121,624 mi

Market: $9,495$9,495

Roselle, IL

No Photo

2016 Buick LaCrosse

Breese, IL

Unscored
$12,87562,851 mi

Market: $12,875$12,875

Breese, IL

No Photo

2014 Buick LaCrosse

Countryside, IL

Unscored
$8,595136,641 mi

Market: $8,595$8,595

Countryside, IL

No Photo

2014 Buick LaCrosse

Des Plaines, IL

Unscored
$8,595136,641 mi

Market: $8,595$8,595

Des Plaines, IL

No Photo

2015 Buick LaCrosse

Aledo, IL

Unscored
$10,990136,679 mi

Market: $10,990$10,990

Aledo, IL

No Photo

2012 Buick LaCrosse

McLean, IL

Unscored
$4,800136,000 mi

Market: $4,800$4,800

McLean, IL

No Photo

2015 Buick LaCrosse

Freeburg, IL

Unscored
$8,995139,581 mi

Market: $8,995$8,995

Freeburg, IL

No Photo

2014 Buick LaCrosse

Glenview, IL

Unscored
$10,99588,289 mi

Market: $6,995$7,995

Glenview, IL

No Photo

2014 Buick LaCrosse

Mattoon, IL

Unscored
$17,97734,780 mi

Market: $17,977$17,977

Mattoon, IL

No Photo

2014 Buick LaCrosse

Carol Stream, IL

Unscored
$7,995102,602 mi

Market: $6,000$14,995

Carol Stream, IL

Other vehicle markets in Illinois