I bought it to keep for 90 keys + Strange Pumpkin Bombs Southern Hospitality + Strange Exorcism Blutsauger. Owner was asking for about 100 keys. It was the only one for sale and I haven't seen another one on the market since then.

https://backpack.tf/item/13515196578

Buyer

https://backpack.tf/profiles/76561197988875517#!/compare/1733270400/1733529600

Seller

https://backpack.tf/profiles/76561198214802583#!/compare/1733443200/1733529600

Buy Order for Strange Pumpkin Bombs Southern Hospitality is 5 keys

https://backpack.tf/classifieds?item=Southern%20Hospitality&quality=11&tradable=1&craftable=1&australium=-1&killstreak_tier=2&spell=Pumpkin%20Bombs

Buy Order for Strange Exorcism Blutsauger is 2 keys

https://backpack.tf/classifieds?item=Blutsauger&quality=11&tradable=1&craftable=1&australium=-1&killstreak_tier=0&spell=Exorcism

That would be 90+5+2 = 97 keys. But since most people don't like having to sell items I'd round it down to 95.