Sold for $1333 via PayPal:

https://gyazo.com/a3eafac4946842bb588c06b74f8026f1

https://gyazo.com/c75a562c7b044cc8462a35fa28c0ad35

https://backpack.tf/profiles/76561198054898935#!/compare/1676592000/1678492800

https://backpack.tf/item/10591285608

(Purchased from EnderSlicer https://backpack.tf/profiles/76561198177872379 however item was on Marketplace.tf originally and had to be withdrawn hence it not appearing in Ender's inventory comparison)

After feedback from Vrakos Anthrakir regarding Paypal key values and checking buyers/sellers (Thanks to Metalogic's suggestion detailing current averages as well! https://backpack.tf/suggestion/640d0a496860ec75460b58e3)

The Average price for PayPal would be $1.82 which 1333/1.28 = ~732 keys (rounded to 730) for this transaction.