Sale 1:

Sold for 15 keys + ~1 key in metal

https://backpack.tf/profiles/76561199043177646#!/compare/1731456000/1731542400 - Near ID: 15135253817

https://backpack.tf/profiles/76561199746241974#!/compare/1731456000/1731542400

https://backpack.tf/item/9338884214

= 16 keys

Sale 2:

Sold for 16 keys + 5 ref

https://backpack.tf/profiles/76561199746241974#!/compare/1731628800/1731715200 - Near ID: 15143913200

https://backpack.tf/profiles/76561198120747050#!/compare/1731715200/1731801600

https://backpack.tf/item/9338884214

Another taunt matches with the Pool Party on the buyer’s end, but given the lack of the seller’s presence in the history, and the fact that the seller bought the taunt for ~16 two days prior to this sale, I’m going to assume it wasn’t involved in the trade.

= 16 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198116790230#!/compare/1727136000/1727568000

https://backpack.tf/profiles/76561199564942025#!/compare/1727049600/1727136000

https://backpack.tf/item/9338884214

Untraceable

#2

https://backpack.tf/profiles/76561199564942025#!/compare/1729641600/1729728000

https://backpack.tf/profiles/76561199043177646#!/compare/1729728000/1729814400

https://backpack.tf/item/9338884214

Untraceable, bot flip

#3

https://backpack.tf/profiles/76561198120747050#!/compare/1733270400/1733356800

https://backpack.tf/profiles/76561198311498888#!/compare/1733184000/1733270400

https://backpack.tf/item/9338884214

Untraceable

https://backpack.tf/item/9185362671 - mannco

https://backpack.tf/item/3653188415 - mannco, Spec. KS

Sellers:

https://i.imgur.com/3Mpk2Mm.png

https://backpack.tf/item/3868266241 - 23 keys

https://backpack.tf/item/9597724071 - $39.90, ~23 keys

https://stntrading.eu/item/tf2/Unusual+Frosted+Star+Taunt%3A+Pool+Party

https://i.imgur.com/8hob1mS.png

https://backpack.tf/item/9338884214 - ~19.5 keys, on STN

Sales at:

16 (2x)

Taking 16 flat.