Vehicle Details
2018 GMC Sierra 1500
SLT
Webster, TX 77598
Is this 2018 GMC Sierra 1500 SLT a good deal?
OAV verdict: Fair Price
Why: Listed at $30,999, comparable market range $18,900–$34,378, based on 79 comparable listings. Days on lot: 20 days (market average 76 days).
Market price position
$30,999 · within market range
- Regional range
- $18,900 – $34,378
- vs. market
- $12,099 above low · $3,379 below high
- Comparable vehicles
- 79
Market Retail Price (MRP™)
$26,639This vehicle $30,999 · $4,360 (16%) above MRP
MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.
True Retail Value (TRV™)
$31,810This vehicle $30,999 · $811 (3%) below TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-28) — an estimate, not an appraisal. How TRV works.
Similar vehicles recently sold in an estimated 11–41 days.
What does Demand-Verified mean?
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.
Emmons Autoplex
Webster, TX
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
Request availability and out-the-door price
OAV will route your inquiry to Emmons Autoplex for current availability of this 2018 GMC Sierra 1500 SLT and an out-the-door price quote (taxes, fees, addons included).
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
About This 2018 GMC Sierra 1500
Listing updated: Jul 28, 2026Listed by an independent dealer in Webster, TX · On lot for 20 days · VIN verifiable at NHTSA
This used 2018 GMC Sierra 1500 SLT is listed at $30,999 by emmons autoplex in Webster, TX 77598. It has 60,907 miles on the odometer. The exterior color is White. It features a RWD drivetrain with a 5.3L V8 engine and Automatic transmission.
OAV's AI-powered Price-to-Market analysis rates this vehicle as Fair Price — priced at market value. Based on 79 similar vehicles in the Webster market, the estimated market range is $18,900 to $34,378. The local market range in TX is $31,113 to $31,113.
This vehicle has been on the lot for 20 days.
Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).
Market context
This listing is part of OAV's broader Webster, TX trucks market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.
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.
Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.
How this listing is verified
This vehicle listing was aggregated from an independent dealer in Webster, TX, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP1NEC7JG555178 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 processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2018 GMC Sierra 1500 Market in TX
Comparable Vehicles
702
Average Price
$27,884
Price Range
$8,900–$55,220
Avg Days on Lot
76
Based on 702 comparable 2016-2020 GMC Sierra 1500 listings in TX, the average asking price is $27,884. This listing at $30,999 is $3,115 above average (11% above market). Comparable prices in TX range from $8,900 to $55,220. Similar vehicles spend an average of 76 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in TX
8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: SLT — compare trims below)
2018 GMC Sierra 1500
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Houston, TX
2018 GMC Sierra 1500
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2018 GMC Sierra 1500
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2017 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2017 GMC Sierra 1500
SLT
Houston, TX