It's a funny thing with items like paint ball guns, video games, and other small niche items. People look for them, then when a vendor shows up with it, they sell well, then after all interested people have it, sales level off and they may leave. Same for seasonal items. You have to check back every few weeks if there is something you want and can't find. I know there are a lot of kids toys.
That and can also check the pawn store located between the flea market and national wholesale
Check back often, new vendors come often and new items are put out
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