Here you go-
School Promotions - Hot Coupon World
And as far as the value, that's definitely a ymmv, because some people value them more than others. I recently held an auction for some rebate forms, and the total value that the person could get back from the rebates was $28 (4 forms, 6.99 each). My opening bid was $1 and I always accept BTFE as a trade item, and yes, I was looking for ten BTFEs or $1's worth, if that's what they were bidding with.