As of May 2026, the Buick Grand National/GNX market has 132 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $46,995, with the middle 50% of listings priced between $35,000 and $57,500. Buick Grand National/GNX prices have decreased 9.3% over the past quarter, from a median sale price of $49,887 to $45,250.
The typical Buick Grand National/GNX on the market has 50,811 miles. Listings spend an average of 57 days on market before selling or being removed.
Current Buick Grand National/GNX Pricing
A fair price for a Buick Grand National/GNX in May 2026 is between $35,000 and $57,500 (25th to 75th percentile). Prices range from $10,877 to $73,500 across 132 active listings.
Price Distribution (132 Active Listings)
Percentile
Price
Meaning
10th
$10,877
Budget / project cars
25th
$35,000
Below average price
Median (50th)
$46,995
Typical market price
75th
$57,500
Above average / premium
90th
$73,500
Top tier / low miles / rare spec
The average asking price is $86,524, which is higher than the median, indicating that high-priced outliers (rare specifications, very low mileage, or concours-quality examples) pull the average up.
Price by Mileage
Mileage Range
Listings
Median Price
Under 10,000 mi
21
$49,999
10,000 - 25,000 mi
12
$73,500
25,000 - 50,000 mi
20
$57,000
50,000 - 100,000 mi
41
$45,000
100,000 - 150,000 mi
14
$41,500
Over 150,000 mi
2
$1,264,567
Buick Grand National/GNX Price Trends
Buick Grand National/GNX prices have decreased 9.3% over the past quarter. In 2026-Q2, the median sale price was $45,250 across 6 sales, down from $49,887 in 2026-Q1.
On a year-over-year basis, Buick Grand National/GNX prices are up 7.8% ($45,250 vs. $41,987 a year ago).
Buick Grand National/GNX Quarterly Sale Prices (Historical)
Quarter
Sales
Median Price
Average Price
2024-Q3
39
$44,000
$44,862
2024-Q4
42
$40,500
$37,802
2025-Q1
27
$41,800
$48,881
2025-Q2
11
$41,987
$44,803
2025-Q3
25
$50,000
$55,282
2025-Q4
35
$40,250
$47,679
2026-Q1
23
$49,887
$52,119
2026-Q2
6
$45,250
$51,000
Best Value Buick Grand National/GNX by Model Year
The 1986 Buick Grand National/GNX offers the best value with a median price of $36,999 across 29 listings. The most expensive model year is 1984 at a median of $1,264,567.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
1984
7
$1,264,567
$1,400
$1,264,567
1985
1
$49,500
$49,500
$49,500
1986
29
$36,999
$800
$219,900
1987
95
$49,000
$500
$300,000
Where to Buy a Buick Grand National/GNX
The highest concentration of Buick Grand National/GNX listings is in CA with 16 active listings, followed by TX (12), MA (11), FL (11), IL (10).
Regional pricing varies significantly. The lowest median price is in CT at $1,400, while TX has the highest at $189,900. Buyers willing to travel or arrange transport may find savings of $188,500.
Top States by Inventory
State
Listings
Median Price
CA
16
$35,000
TX
12
$189,900
MA
11
$45,000
FL
11
$40,000
IL
10
$47,995
NY
8
$57,000
GA
7
$34,999
WA
3
$41,500
MI
3
$2,000
CT
3
$1,400
Buick Grand National/GNX Market Velocity
Buick Grand National/GNX listings spend an average of 57 days on market. This is a slower market. Buyers have negotiating leverage, especially on listings that have been active for 60+ days. Sellers should consider competitive pricing from the start.
The median time on market is 18 days. The lower median suggests most cars sell relatively quickly, while a smaller number of overpriced listings drag up the average.
Buick Grand National/GNX Buyer's Guide Summary
Fair price range: $35,000 to $57,500. The median is $46,995. Anything below $35,000 is a strong value; above $57,500 should be premium condition, low miles, or a desirable specification.
Trending down: Buick Grand National/GNX prices have dropped 9.3% recently. Patient buyers may benefit from waiting, but desirable examples still sell quickly.
Best value year: The 1986 model year has the lowest median price at $36,999, making it the most accessible entry point into Buick Grand National/GNX ownership.
Take your time, but don't delay: Average days on market is 57. You have some time to research, but the best deals still go fast.
Data sourced from 6 marketplaces including eBay Motors, Bring a Trailer, Cars & Bids,
AutoTrader, CarGurus, Cars.com, Facebook Marketplace, Classic.com, and Hagerty Marketplace.
Updated daily by CarSearch.Pro's automated pipeline.
Browse all 132 active Buick Grand National/GNX listings.