RCUniverse.com and eBay are two websites that sell used RC vehicles, including trucks. RCUniverse.com allows trading, while eBay limits users to selling and buying so that the website can take a share of the price.
Both eBay and RCUniverse.com allow users to look specifically for used items, making both websites ideal for buying used RC trucks. They also show images and allow sellers to list the condition of items, making it easier for a buyer to ensure the truck he is purchasing is as described. Both websites list details on the seller's feedback so that buyers can avoid dishonest sellers.