As of April 2026, the Buick Grand National/GNX market has 88 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $49,995, with the middle 50% of listings priced between $41,500 and $59,950. Buick Grand National/GNX prices have decreased 10.0% over the past quarter, from a median sale price of $49,999 to $45,000.
The typical Buick Grand National/GNX on the market has 50,000 miles. Listings spend an average of 126 days on market before selling or being removed.
Current Buick Grand National/GNX Pricing
A fair price for a Buick Grand National/GNX in April 2026 is between $41,500 and $59,950 (25th to 75th percentile). Prices range from $36,500 to $69,900 across 88 active listings.
Price Distribution (88 Active Listings)
Percentile
Price
Meaning
10th
$36,500
Budget / project cars
25th
$41,500
Below average price
Median (50th)
$49,995
Typical market price
75th
$59,950
Above average / premium
90th
$69,900
Top tier / low miles / rare spec
The average asking price is $55,377, 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
16
$49,995
10,000 - 25,000 mi
4
$89,000
25,000 - 50,000 mi
22
$52,994
50,000 - 100,000 mi
34
$47,000
100,000 - 150,000 mi
5
$52,994
Over 150,000 mi
3
$42,000
Buick Grand National/GNX Price Trends
Buick Grand National/GNX prices have decreased 10.0% over the past quarter. In 2026-Q2, the median sale price was $45,000 across 1 sales, down from $49,999 in 2026-Q1.
On a year-over-year basis, Buick Grand National/GNX prices are up 7.2% ($45,000 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
22
$49,999
$52,989
2026-Q2
1
$45,000
$45,000
Best Value Buick Grand National/GNX by Model Year
The 1986 Buick Grand National/GNX offers the best value with a median price of $39,995 across 13 listings. The most expensive model year is 1987 at a median of $49,999.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
1986
13
$39,995
$34,000
$219,900
1987
75
$49,999
$3,000
$300,000
Where to Buy a Buick Grand National/GNX
The highest concentration of Buick Grand National/GNX listings is in IL with 12 active listings, followed by NY (11), CA (6), TX (6), GA (4).
Regional pricing varies significantly. The lowest median price is in CA at $38,888, while FL has the highest at $89,000. Buyers willing to travel or arrange transport may find savings of $50,112.
Top States by Inventory
State
Listings
Median Price
IL
12
$51,860
NY
11
$60,000
CA
6
$38,888
TX
6
$48,999
GA
4
$48,000
FL
4
$89,000
NJ
3
$54,990
WA
2
$300,000
NE
2
$59,000
MI
1
$35,000
Buick Grand National/GNX Market Velocity
Buick Grand National/GNX listings spend an average of 126 days on market. This is a slow-moving market. Listings tend to sit for extended periods, giving buyers significant negotiating power. Sellers should be realistic on pricing and patient.
The median time on market is 66 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: $41,500 to $59,950. The median is $49,995. Anything below $41,500 is a strong value; above $59,950 should be premium condition, low miles, or a desirable specification.
Trending down: Buick Grand National/GNX prices have dropped 10.0% 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 $39,995, making it the most accessible entry point into Buick Grand National/GNX ownership.
Negotiate: With an average of 126 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.
Data sourced from 8 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 88 active Buick Grand National/GNX listings.