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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 · August 20, 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 6,000 Buick vehicles across the Illinois market.

Total Buick

6,004

Average Price

$32,509

Price Range

$3,000–$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.

  • Millions of local retail comparables across U.S. markets.
  • Vehicles compared on year, make, model, and trim (when available) within the local and regional market.
  • Real price-to-market ranges from regularly refreshed market data.
  • Days on lot incorporated as a sell-through velocity signal.
  • Listings priced below their typical market range surface as undervalued — a great deal or a good deal compared to similar vehicles in the local market.
  • Listings within the typical range surface as fairly priced — in line with what comparable vehicles are listed for locally.
  • Listings priced above the typical range surface as above market — higher than what comparable vehicles are typically listed for in the area.
  • Dealer business information is public on every profile. OAV-claimed dealers manage their profile directly and route inquiries through OAV.

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 analyzed6,004
Average price$32,509
Price range$3,000 – $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 are Demand-Verified in Illinois?
A listing is Demand-Verified when the matched sold cohort of similar vehicles is moving faster than its market baseline, the cohort meets minimum-sample and freshness requirements, and this specific listing has not aged beyond the cohort's typical selling window. It is sell-through evidence about demand, and is separate from OAV's price-to-market verdict.
Which Buick vehicles are undervalued compared with local comparables in Illinois?
OAV's Price-to-Market analysis evaluates every eligible listing against similar Buick vehicles in Illinois, using year, make, model, geography, and available configuration attributes, with mileage-aware adjustments and trim/configuration matching applied where sufficient comparable data supports them. 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, geography, and available configuration attributes, with mileage-aware adjustments and trim/configuration matching applied where sufficient comparable data supports them — 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 priced low. The Demand-Verified badge is sell-through evidence: the listing's similar-vehicle sold cohort is moving faster than its market baseline, and this listing hasn't aged beyond that cohort's typical selling window — it is separate from OAV's price verdict. A Demand-Verified Deal combines both: the Demand-Verified badge AND a price below the comparable market range. The price signal says it's cheap; the demand signal says the market is actually buying at that price.
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?
How long a vehicle sits helps show whether the market is actually buying. OAV compares a listing's days-on-lot to the sold cohort of similar vehicles: when comparable vehicles have been selling quickly and this listing is still within that cohort's typical selling window, it corroborates real demand. A listing sitting far longer than its cohort typically takes to sell is the opposite signal — worth confirming its history, condition, and price before assuming it's a deal.
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 6,004 active listings.

No Photo

1999 Buick Park Avenue

Decatur, IL

UnscoredInsufficient · 0
$3,000126,668 mi

Comparison scope: Decatur, IL area

Decatur, IL

No Photo

2013 Buick Enclave

Addison, IL

UnscoredLimited · 9
$3,000193,578 mi

Comparison: 9 similar vehicles in Addison, IL area

Addison, IL

No Photo

2007 Buick Lucerne

Loves Park, IL

UnscoredInsufficient · 0
$3,200165,698 mi

Comparison scope: Loves Park, IL area

Loves Park, IL

No Photo

2003 Buick Century

Harvey, IL

UnscoredInsufficient · 0
$3,20079,300 mi

Comparison scope: Harvey, IL area

Harvey, IL

No Photo

2016 Buick Verano

South Beloit, IL

UnscoredInsufficient · 0
$3,650187,123 mi

Comparison scope: South Beloit, IL area

South Beloit, IL

No Photo

2007 Buick Lucerne

Glendale Heights, IL

UnscoredInsufficient · 0
$3,700126,506 mi

Comparison scope: Glendale Heights, IL area

Glendale Heights, IL

Also available at 1 other IL location

No Photo

2006 Buick Lucerne

Hazel Crest, IL

UnscoredInsufficient · 0
$3,795131,007 mi

Comparison scope: Hazel Crest, IL area

Hazel Crest, IL

No Photo

2011 Buick LaCrosse

Loves Park, IL

UnscoredInsufficient · 4
$3,800131,897 mi

Comparison: 4 similar vehicles in Loves Park, IL area

Loves Park, IL

No Photo

2005 Buick Century

Belleville, IL

UnscoredInsufficient · 0
$3,80088,068 mi

Comparison scope: Belleville, IL area

Belleville, IL

No Photo

2006 Buick Rainier

Springfield, IL

UnscoredInsufficient · 0
$3,897135,434 mi

Comparison scope: Springfield, IL area

Springfield, IL

No Photo

2015 Buick Encore

Pontoon Beach, IL

UnscoredInsufficient · 0
$3,90087,880 mi

Comparison scope: Pontoon Beach, IL area

Pontoon Beach, IL

No Photo

2008 Buick Lucerne

Morrison, IL

UnscoredInsufficient · 0
$3,976172,072 mi

Comparison scope: Morrison, IL area

Morrison, IL

Also available at 19 other IL locations

No Photo

2012 Buick Regal

Springfield, IL

UnscoredInsufficient · 0
$3,995153,968 mi

Comparison scope: Springfield, IL area

Springfield, IL

No Photo

2004 Buick Regal

Chicago, IL

UnscoredInsufficient · 0
$3,995155,000 mi

Comparison scope: Chicago, IL area

Chicago, IL

No Photo

2005 Buick Park Avenue

Lake Villa, IL

UnscoredInsufficient · 0
$3,999145,321 mi

Comparison scope: Lake Villa, IL area

Lake Villa, IL

No Photo

2006 Buick Lucerne

Zion, IL

UnscoredInsufficient · 0
$3,999145,588 mi

Comparison scope: Zion, IL area

Zion, IL

No Photo

2012 Buick Regal

Armington, IL

UnscoredInsufficient · 0
$3,999184,281 mi

Comparison scope: Armington, IL area

Armington, IL

No Photo

2005 Buick LaCrosse

Warrenville, IL

UnscoredInsufficient · 0
$4,000140,600 mi

Comparison scope: Warrenville, IL area

Warrenville, IL

No Photo

2011 Buick Enclave

Armington, IL

UnscoredInsufficient · 0
$4,249193,871 mi

Comparison scope: Armington, IL area

Armington, IL

No Photo

2009 Buick Enclave

Harvey, IL

UnscoredInsufficient · 0
$4,250130,275 mi

Comparison scope: Harvey, IL area

Harvey, IL

No Photo

2006 Buick Lucerne

Lockport, IL

UnscoredInsufficient · 0
$4,400124,871 mi

Comparison scope: Lockport, IL area

Lockport, IL

No Photo

2009 Buick Lucerne

Blue Island, IL

UnscoredInsufficient · 4
$4,495172,451 mi

Comparison: 4 similar vehicles in Blue Island, IL area

Blue Island, IL

No Photo

2008 Buick LaCrosse

Villa Park, IL

UnscoredInsufficient · 0
$4,499109,610 mi

Comparison scope: Villa Park, IL area

Villa Park, IL

No Photo

2006 Buick LaCrosse

Loves Park, IL

UnscoredInsufficient · 0
$4,500143,000 mi

Comparison scope: Loves Park, IL area

Loves Park, IL

Other vehicle markets in Illinois