Sale 1:

Sold for 16 keys + ~1 key in metal (Buyer’s end)

Seller: https://backpack.tf/profiles/76561198312816066#!/compare/1550275200/1550361600

Buyer: https://backpack.tf/profiles/76561198086990597#!/compare/1550275200/1550361600

https://backpack.tf/item/6629630507

X = 17

Sale 2:

Sold with ~2 keys in items for Fountain of Delight Jumping Jack + Double-spelled Strange Spec. KS Degreaser + RL skin

Seller: https://backpack.tf/profiles/76561198118701151#!/compare/1549152000/1549411200

Buyer: https://backpack.tf/profiles/76561198061667387#!/compare/1549238400/1549411200

https://backpack.tf/item/3408994786

Cheapest Degreaser is around 6 keys. This sale feels rather low. Should be good with the sales we have right now anyways. Would support the drop, however.

Marketplace Sales:

https://marketplace.tf/items/148;5;u7

https://manic.tf/keyprice/?at=2019-02-16 - $32 / $1.8 = 17.78 keys

X = 18

Sales at:

17

18

No current sellers, apart from the marketplace one for $46.

Going with 17-18.