Always cap sales at the pure B/O. Bp.tf prices are meant to represent an item's pure value, so if someone surpasses that value with item overpay, the pure price is still the one we take.

However, that sale was used to set the range in the Chullo suggestion, meaning it can't be re-used here: https://backpack.tf/suggestion/596f9040cf6c7539e84b7d50

Other sale was basically outdated when this was submitted.

http://www.tf2outpost.com/trade/29267348 - Supposedly a seller for 50, but it isn't in their backpack? Doesn't show up as sold on Marketplace either.

With the high end of the submitted range unsupported, I would just wait for newer sales before updating this.