https://backpack.tf/item/15667427451

8 keys:

https://backpack.tf/profiles/76561199144265605#!/compare/1751414400/1751500800

https://backpack.tf/profiles/76561198003404879#!/compare/1751414400/1751500800

https://steamcommunity.com/market/listings/440/Unusual%20Big%20Elfin%20Deal

https://imgur.com/LzakdS1 (credit to protoman sem capacete for the screenshot)

July 6 2 PM: 17.75€/1.98=8.96 ~9 keys

Other one currently listed at 17.51€ on ther, with the current key value that would equal to ~8 keys but it really depends on what keys are worth on the day, especially given the sudden rise keys have had in the past days

https://backpack.tf/item/13332793815

https://imgur.com/MQKjUMB Seller at 8 keys for 18 days

https://marketplace.tf/items/tf2/652;5;u33 Sellers at ~10 keys

Taking 8-9 keys for now, if the current seller at 8 has more trouble selling I'll resuggest at 8 flat