I wasn't aware that the TSA sold all of the stuff it confiscated! That's cheap goods right there! My mom works for a cruise line, and they don't confiscate stuff, but people do tend to forget all kinds of things they bring on the ship, so every once in a while the company has a big flea market available to employees. I find it funny when my mom comes home with watches and bracelets she wouldn't have otherwise bought.
It is important to have realistic expectations when attending a government car auction. While you can find some good bargains, you are not going to find a brand new BMW for $100.00. Government auctions sell both fleet cars and vehicles that have been impounded by government agencies. The conditions of these vehicles can range from great to not running. Set your expectations and budget realistically.