A bad rumage sale cash-in around where I live is $100. Usually get around $150-$200. The weird thing about rummage sales is that you will sell absolute junk for alot of cash, but the stuff that is actually worth something, you can't hardly give away. I've had horrid sweatshirts and the like I didn't even want to put out for fear of running people off, but the wife not only says put them out there, but put $5 each on them. Sure enough, some lady comes by and buys the lot of them!
I'll be having a rumage sale next weekend. Hints for newbs: Have your rummage sale the first weekend of the month. You will make more money.