Sale used in previous suggestion is outdated, time for an update.

Sales

Sale 1: Untraceabole

https://backpack.tf/profiles/76561198850274253#!/compare/1601251200/1601337600

https://backpack.tf/profiles/76561198063501482#!/compare/1577232000/1602115200

Buyout was about 30 keys~

https://bot.tf/stats/listings/Y7J67GPL

Sale 2: Untraceable

https://backpack.tf/profiles/76561198267189538#!/compare/1598486400/1598572800

https://backpack.tf/profiles/76561198129223570#!/compare/1598486400/1598659200

Sale 3: Sold to buyorder

https://backpack.tf/profiles/76561198044635799#!/compare/1598140800/1601337600

https://backpack.tf/profiles/76561198267189538#!/compare/1598054400/1598140800

Buyorder was about 24 keys~

https://bot.tf/stats/listings/Y5Z13Q33

Sale 4: Untraceable

https://backpack.tf/profiles/76561198192602363#!/compare/1597449600/1597536000

https://backpack.tf/profiles/76561198044635799#!/compare/1596758400/1597449600

Buyout was 40 keys

https://bot.tf/stats/listings/4WX2P60N

Sale 5: Sold for 28 keys

https://backpack.tf/profiles/76561199037317509#!/compare/1602979200/1603065600

https://backpack.tf/profiles/76561198205939253#!/compare/1602892800/1603065600

Sale 6: Untraceable

https://backpack.tf/profiles/76561198000889832#!/compare/1598745600/1598832000

https://backpack.tf/profiles/76561198083627039#!/compare/1598400000/1598745600

Other exchanges, such as with qs store and lootfarm?

https://backpack.tf/item/7297547055

Marketplace sales

https://marketplace.tf/items/tf2/30993;5;u120

September

49.99 on September 2 (49.99/1.82 = 27~)

https://manic.tf/keyprice/?at=2020-09-02

October

60 on October 9 (60/1.87 = 32~)

https://manic.tf/keyprice/?at=2020-10-09

59.99 on October 18 (59.99/1.87 = 32~)

https://manic.tf/keyprice/?at=2020-10-18

Current Classifieds

https://backpack.tf/classifieds?item=Punk%27s%20Pomp&quality=5&tradable=1&craftable=1&australium=-1&particle=120&killstreak_tier=0

https://gyazo.com/e74b82dce8f949e3d4fea976255f55e2

Summary

Sales at 24, 28, likely 30, and likely 40.

Marketplace sales at 27, 32, and 32.

Conclusion

24 is low due to buyers. 40 is likely high due to all the sales at far less. Excluding both as outliers.

Going with 27-32 here.

Take it easy.