Other National Chain Store ~ Question: Big Lots ~ Buzz Club question/next 20 % off day?

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I am thinking about buying furniture at Big Lots using the buzz club point coupon system. Apparently I need 10 receipts (with $20 minimum purchases) to get a 20% off coupon. Has anybody purchased furniture using this system? Can I get all 10 Receipts in one day from one store?Also, does anybody know when the next 20% off coupon might be for buzz club members? Just trying to weigh out my options. Any kind of info is appreciated ! thanks!