Great place to poke around for an afternoon. The things in here change all the time so it's worth coming again and again. Each booth is manned by different people so you get all kinds of stuff. Some booths have shlocky stuff, some have pretty good cheap stuff, some looks like someones terrible garage, and some have genuinely cool antique stuff.
If you're looking for something specific, you can ask any one of the people working there and they all seem to know where to find something to show you. Everyone I've spoken to there are very helpful and keen to help you find what you're looking for. The assistants also leave you alone if you wish, so you can poke around in peace. Definitely the best antique place in Vegas, and I've gone to them all. Be prepared to hunt!