This is strategic shopping at it's best.
Go there for cheap candy, chocolate bars, cold pop, garbage bags, mugs, birthday cards. Avoid anything you want to have last more than one use. Watch your purses and pockets because there are always shoplifters walking around in there. Expect the line-ups at check-out to make no sense and take 15 minutes longer than they should; people will cut in front of you, the cashiers will examine every purchase, and don't even think about lining up behind someone who has brought something "fragile" because it'll take the cashier half an hour to wrap it in paper.
Oh! And the best place to buy packs of gum.
P.S. Everything you really, really want is $1.25 or $2.00. You've been warned.