Revised from the previous suggestion. Thanks Xergoyf! - https://next.backpack.tf/suggestions/62cf7a865e6c284efa06ea54

Misc hype

Sale 1) I paid $250 zelle. Keys are valued at $1.60 per key

https://gyazo.com/ddd85a6a199a55f099a45410b08dc69c

https://next.backpack.tf/profiles/76561199073805105/compare?from=1657584000&to=1657756800

https://next.backpack.tf/profiles/76561198064724507/compare?from=1657670400&to=1657756800

250/$1.60= 156.25 keys = ~156 keys

New Sale: https://mannco.store/item/440-smoking-unusual-pencil-pusher

Sold for 220 USD on August 27

220/1.71= 128.65 keys = ~ 130 keys

Currently, there's a seller at 130 keys at the moment.

https://marketplace.tf/items/tf2/605;5;u35

300 / 1.95 = ~154

200 / 1.94 = ~103

Sales at:

103

130

154

156

Going 105-155 keys or an average of 130 keys