(August 29, 2023) Used-car shoppers who want to purchase a late-model vehicle for under $20,000 will need a time machine. Four years ago, sub-$20,000 cars made up nearly half of options in the pool of 1- to 5-year-old used inventory. Those vehicles now make up a scant 12 percent, according to an iSeeCars.com used-vehicle pricing study published this month,.