Is the $30,500 price on this 2018 GMC Sierra 1500 a good deal?

OAV rates this as a Great Deal because the asking price of $30,500 is below the typical market range for this vehicle.

What is the average price for a 2018 GMC Sierra 1500 in WY?

Based on 60 comparable listings in WY, the average asking price for a 2016-2020 GMC Sierra 1500 is $33,270, with prices ranging from $14,775 to $52,389.

How long does a 2018 GMC Sierra 1500 typically stay on dealer lots?

Comparable GMC Sierra 1500 listings in WY spend an average of 48 days on dealer lots.

Where is this 2018 GMC Sierra 1500 located?

This vehicle is listed in Casper, WY 82609. VIN: 3GTU2NEJ3JG115800. Mileage: 90,616 miles.

What is the fair market price range for this 2018 GMC Sierra 1500?

OAV's Price-to-Market analysis estimates the fair market range is $33,127 to $37,565, based on 3 comparable vehicles.

Vehicle Details

VIN3GTU2NEJ3JG115800

TrimSLT

Exterior ColorWhite

Drivetrain4WD

Engine5.3L V8

TransmissionAutomatic

Fuel TypeUnleaded

Inventory Typeused

MSRP$30,500

Days on Lot54

Days on Market128

2018 GMC Sierra 1500

SLT

Great Deal

$30,50090,616 miles

Casper, WY 82609

Market price position

Lowest comparable ($)

33,127

Highest comparable ($)

37,565

This vehicle's price ($)

30,500

$30,500 · $2,627 below market low

$33,127comparable$37,565

Regional range: $33,127 – $37,565
vs. market low: — $2,627 (8% below)
Comparable vehicles: 3

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges refresh daily.

Local Range$33,127 – $37,565

Regional Range$33,127 – $37,565

Dealer Info

Hidden

Casper, WY

This dealer is not yet on OAV

Request a connection and we'll notify the dealer you're interested

View all vehicles from this franchise dealer in Casper, WY →

About This 2018 GMC Sierra 1500

Listing updated: Apr 26, 2026

Listed by a franchise dealer in Casper, WY · On lot for 54 days · VIN verifiable at NHTSA

This used 2018 GMC Sierra 1500 SLT is listed at $30,500 by a franchise dealer in Casper, WY 82609. It has 90,616 miles on the odometer. The exterior color is White. It features a 4WD drivetrain with a 5.3L V8 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as a Great Deal — priced below market value. Based on 3 similar vehicles in the Casper market, the estimated market range is $33,127 to $37,565. The local market range in WY is $33,127 to $37,565.

This vehicle has been on the lot for 54 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).

How this deal is rated

OAV compares this 2018 GMC Sierra 1500 against similar vehicles currently available in the local and regional market — same make, model, and year range, filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

Great Deal — priced below the typical range for comparable vehicles.
Fair Price — priced within the expected range for comparable vehicles.
Overpriced — priced above the typical range for comparable vehicles.

This rating refreshes daily as inventory enters and leaves the market. The dealer on this listing has not yet activated on OAV, so the business name and contact details are anonymized here. Activated (paying) dealers appear with their verified business name and a Verified badge.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Casper, WY, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network. The VIN 3GTU2NEJ3JG115800 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.

Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is refreshed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2018 GMC Sierra 1500 Market in WY

Comparable Vehicles

Average Price

$33,270

Price Range

$14,775–$52,389

Avg Days on Lot

Based on 60 comparable 2016-2020 GMC Sierra 1500 listings in WY, the average asking price is $33,270. This listing at $30,500 is $2,770 below average (8% below market). Comparable prices in WY range from $14,775 to $52,389. Similar vehicles spend an average of 48 days on dealer lots in this market.