jeeps are modded aftermarket a huge amount... you can do anything to them (for a price)... some mods are superficial and just help with exactly what you are mentioning (something that just doesn't look/feel right to the buyer) and others are pure performance based...
I find the gas covers are purchased by about 25% of jeep buyers. rubber mats are on like 65%... new wheels/tires about 7%... lifts about 2%. nearly 100% have *something* done.. even if it's just swapping an antenna, painting a tow hook, adding some decals, aftermarket side steps, grill inserts... something.