not sure that this one will be accepted

looks like this suggestion will affect on strange shovel, not unique-strange

https://backpack.tf/suggestion/58d53ae4e3387722a20954c0

I sold the strange unique hat for 30k pure and 4 others including this for a captain space man, b/o on each was at least 40. Either I got crazy lucky or what but this is way low for this

I mean bat not hat

These were created during Halloween 2016, which a bug allowed people to unbox/receive strange and unusual items as the Unique quality. There were a bunch of hype specifically around the Unusual/Unique hats (basically yellow hats with unusual effects), but Valve ended up patching those out. They didn't seem to patch out the weapons that were unboxed, probably because it was easier to change Unusual/Unique hats to just Unusual rather than fixing all the Strange/Unique weapons.

Either way, during that time you could've gotten anything ranging from a Strange Unique Shovel all the way up to a Strange Unique Australium weapon just by unboxing or finishing an MVM mission.

EDIT: To add credence to this suggestion (if it's even able to be passed due to BP's system), I did sell my Strange Unique shovel for around 8 keys a while back. It's way too old for any use in this suggestion as proof, however it shows that there are collectors out there willing to pay a good amount for these weapons. 3.5 keys personally seems good to me, however I also think that there's the possibility that these can go for much more depending on the right buyer.