Just like with garage sales, auctions, etc. these flea markets are for the treasure hunter. Don't take your kids, it would be way too frustrating trying to keep little ones away from everything. Be prepared to possibly be around some smoke, to have little help if you're looking for something in particular, and to look at a lot of stuff you don't want before finding something you do. Prices vary. Sometimes you luck out and find a great buy, other times you don't.