Just a tip: Don't use trades that want bp.tf price +/- x amount as any kind of proof. Because when you change the price of their item that means the price they ask for will also change. What I am trying to say is that once I used such trade as main proof and it got accepted (when it shouldn't have) because after that a suggester made suggestion for the same item using the same link because the seller/buyer asked for bp.tf price +/- x amount. The funny thing is I made 4 suggestions with such invalid proof and they got accepted... After that the mods started closing such suggestions. Nothing to do with your suggestion really as it's not used as main proof. Just wanted to let you know. (I hope you can understand what I am saying. And if you can't I won't be surprised, because it's complex.)

Edit: Another thing. You can't really use trades that want "bp.tf prices" when there is a range. Unless you want to add each seller and ask them which end they want..