Sales

Sale 1: Sold for 33 keys

https://backpack.tf/profiles/76561198125791160#!/compare/1602460800/1602547200

https://backpack.tf/profiles/76561198023113266#!/compare/1601164800/1602547200

https://bot.tf/stats/listings/Y30WE5V6

Sale 2: Sold with 8 keys for Orbiting Fire Large Luchadore (33.5 keys)

https://backpack.tf/profiles/76561198070386336#!/compare/1600560000/1600646400

https://backpack.tf/profiles/76561198180923509#!/compare/1600560000/1600646400

33.5 - 8 = 25.5 rounding to 26 keys

Sale 3: Sold to a buyorder

https://backpack.tf/profiles/76561198092371021#!/compare/1600387200/1600560000

https://backpack.tf/profiles/76561198195933333#!/compare/1600473600/1600560000

Buyorder was about 28 keys~

https://bot.tf/stats/listings/Y80ZQDOD

Sale 4: Sold for 32 keys

https://backpack.tf/profiles/76561198021055079#!/compare/1600300800/1600387200

https://backpack.tf/profiles/76561198092371021#!/compare/1600300800/1600387200

Marketplace sales

https://marketplace.tf/items/tf2/920;5;u32

August

79.99 on August 1 (79.99/1.91 = 42~)

https://manic.tf/keyprice/?at=2020-08-01

Listings during the time: https://bot.tf/stats/listings/4R01GEO5

69.95 on August 13 (69.95/1.84 = 38~)

https://manic.tf/keyprice/?at=2020-08-13

https://backpack.tf/item/1488827870

40.01 on August 18 (40.01/1.79 = 22~)

66.67 on August 18 (66.67/1.79 = 37~)

https://manic.tf/keyprice/?at=2020-08-18

October

69.99 on October 6 (69.99/1.87 = 37~)

https://manic.tf/keyprice/?at=2020-10-06

https://backpack.tf/item/9249133055

69.99 on October 9 (69.99/1.87 = 37~)

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

Current Classifieds

https://backpack.tf/classifieds?item=Crone%27s%20Dome&quality=5&tradable=1&craftable=1&australium=-1&particle=32&killstreak_tier=0

https://gyazo.com/8ef3fb6d593309c733d2441d7a7f6a67

Summary

Sales at 26, 28, 32, and 33.

Marketplace sales at 22, 37, 37, 37, 38, and 42.

Conclusion

22, 26, and 28 seem low due to current buyers up to about 29~. 42 seems high due to past sellers at less during the time of the sale.

Excluding the 4 sales above.

Going with 32-38 here.

Take it easy.