Wow. They're running out of weapons to make into Stranges. I already have the knife (well, its SF counterpart) and I'm not terribly interested in the Overdose or Loch n' Load, unless I'm aiming for completing the Strange collection. I've been trying to break out of the "Gotta Strange 'em All" mentality seeing that I have 50+ of the little buggers.
Yeah, Yukarin. It's unfortunate that some of the prices really suck. It seems that they hinge on availability, usefulness, and overall demand for that item. When the S Dead Ringer came out, some people were paying 4+ keys for one, due to it being new and the fact that Spy stuff is incredibly popular. Now, 2 Ref is a lot more down-to-Earth. The other Medic saws are much better, so not many people would be interested in the default bonesaw, aside from collectors..
I wonder if Crate 40 will be one of those rare ones like 30 is. Then again, I can't think of many high-demand items that haven't been Stranged yet. Enforcer and Huntsman for sure... but not much else. It's still too early for them to want to Strange the new weapons from the Christmas update.