Discount Price Finder
Sorry. This program can only take discounts that are 10% or above, YET. It also can't round up or down to the nearest hundredth cent (ex. 7.99. mine does 7.992), YET.
Try looking elsewhere for coupons. For example, I spent a long time looking for a thirty percent coupon in BOSE. But after a while, I was still able to find a coupon at https://www.dontpayfull.com/. I'm just a crazy fan of coupons in different stores. I love them not only because of the economy, but because of the collection. I like to have coupons, discount cards in various stores, and the more, the better. So, try to find a coupon somewhere else, as there are many options that you just don't know about.