Owning a truck is about utility, but the bed takes a beating. Scratches lead to rust, and rust kills the resale value faster than high mileage. Late winter is the best time to look for a spray-in liner. Shops are usually slow during the cold months and are more willing to talk about the price before the spring rush hits.
A professional job usually runs about $650. You can negotiate the labor separately, but for the actual payment, we use a specific window. A card helps you handle the upgrade cost without draining your savings. You get the protection now and pay it off while you are actually using the truck.
This plan only works if you finish the payments before the 18 months are up. If you carry a balance past that window, the standard interest rate applies to whatever is left, and your cheap upgrade becomes an expensive debt.