I need someone who has gone to the San Antonio Police auto auction.?

I need to know the process and if the cars are worth buying from there.|||I have gone a few times and there is a lot of junk there, but there is usually a few good deals. You have to get there before 9:45 to register so you can go in the gate. The auction is usually over by noon and you have to have the vehicle off the lot by the next day. The vehicles don't have the keys so you cant start them, and you have to get a key made after the auction. If you have any more questions, let me know.