Sticker Shock

I'm having a lot of fun going around the house pasting bright green stickers on stuff, then writing a price on the stickers. Target date for my garage sale is Saturday, September 25. I've never held a garage sale before so this will be an interesting exercise. What if everything sells and we are left with the bare minimum for the next six months? I think that will not be much of a hardship - how many times was the "Delux Drinkmaster" used anyway? We North Americans have too much stuff.