Thr problem with Ebay is once they become a "hot" coupon... they start to cost way to much! I typically buy coupons that are things I would normally buy alot of, like bottled drinks. I buy alot of propel (gatorade water) , as it is often (always) free. So, I occasionally go on there and buy the coupons that have a far exp date. I know that there will be a sale where they cost me pennies. I have bought the high dollar electrasol coupons before, but I buy them AS SOON as they come out. Without fail, one of my stores has had a BOGO sale or CVS has had an extra buck deal while those coupons are out. I but they asap because I know I will use them. Alot of that, is just from experience.. its hard to always know what is going to be "hot"