Item 1: https://backpack.tf/item/13415413099

Sale 1:

https://backpack.tf/profiles/76561199177132803#!/compare/1770940800/1771027200

https://backpack.tf/profiles/76561199088594463#!/compare/1770940800/1771027200

19 keys

Item 2: https://backpack.tf/item/13326941798

Listed on Mannco.Store

Item 3: https://backpack.tf/item/13283647558

Sale 2:

https://backpack.tf/profiles/76561199192607141#!/compare/1768089600/1768176000

https://backpack.tf/profiles/76561197992416935#!/compare/1768089600/1768435200

20 keys

Item 4: https://backpack.tf/item/9207685914

Withdrawn from bot and listed on Mannco.Store

Item 5: https://backpack.tf/item/8393716481

Listed on MPTF

Item 6: https://backpack.tf/item/4475395434

Sale 3:

https://backpack.tf/profiles/76561198349848918#!/compare/1766102400/1766188800

https://backpack.tf/profiles/76561199383999437#!/compare/1764115200/1766793600

22 keys

Sale 4:

https://backpack.tf/profiles/76561199383999437#!/compare/1766793600/1766880000

https://backpack.tf/profiles/76561198837023310#!/compare/1766880000/1766966400

Untrace

Item 7: https://backpack.tf/item/4467098849

Sale 5:

https://backpack.tf/profiles/76561199043177646#!/compare/1769212800/1769299200

https://backpack.tf/profiles/76561199581722058#!/compare/1769212800/1769299200

Dumped to STN for ~17 keys

Sale 6:

https://backpack.tf/profiles/76561199581722058#!/compare/1771113600/1771200000

https://backpack.tf/profiles/76561199383999437#!/compare/1771113600/1771200000

~19 keys

Sales:

17, 19 (x2), 20, 22

Sellers:

BPTF - https://imgur.com/U24ceON none

MPTF - https://marketplace.tf/items/tf2/30672;5;u3121 $69.99 (~37 keys)

STN - https://stntrading.eu/item/tf2/Unusual+Pastel+Trance+Taunt%3A+Zoomin%27+Broom none

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Zoomin%27%20Broom?filter=+Pastel+Trance https://imgur.com/847dqZy none

Nothing currently counters 17, however I don't think a buy order sale should be used as the low end when dropping a price. Going with 19-22 keys