So if there is only one sale given, why is there a price range? And why is the price suggested completely different to the evidence provided?

Was planning on resuggesting, this is an incorrect range. Only two sales findable, 26 and 39. I was going to do this myself, but you beat me to it. You ought to resuggest at 26-39. Backpack compare link works best, by the way. Here is a compare of the 39 sale. Aforementioned 26 is on my first suggestion. https://backpack.tf/profiles/76561198101092551#!/compare/1529366400/1529971200