Quotes from aaroncsn: "Trades that use "Backpack.tf prices - xx scraps" should not be the only proof for your suggested price. It should only be used as supporting proof. This is to stop people from using the same link over and over again to drop an item's price because the seller's price decreases with every suggestion accepted."

I think that applies to "- X% bp.tf prices", therefor your suggestion is invalid.

But don't go with my word, should wait for a mod to clear that out.