Suggestion Version 3.0 w/ updated price ranges to reflect proper selling values... again.

https://backpack.tf/classifieds?item=Giger%20Counter&quality=11&tradable=1&craftable=1&australium=-1&killstreak_tier=0

Buy Orders start at 21.43, ~21.4 keys.

Sell Orders start at 23.96, ~24 keys. Excluding the current sell orders for 22.43 and 23 keys due to the orders likely being quicksell listings.

Bot.tf Sales:

https://ibb.co/j6S2TNk

https://ibb.co/9HBXy5p

7 Sold for 25 keys.

2 Sold for 25.13, ~25.1 keys.

1 Sold for 20.34, ~20.3 keys.

1 Sold for 20.35, ~20.5 keys.

1 Sold for 21 keys.

1 Sold for 20.43, ~20.4 keys.

1 Sold for 20.45, ~20.5 keys.

1 Sold for 21.27, ~21.3 keys.

1 Sold for 21.18, ~21.2 keys.

Marketplace.tf Sales:

https://ibb.co/cTXqJf5

1 Sold for $51.90/ 1.89 = 27.46, ~27.5 keys.

1 Sold for $43.40/ 1.87 = 23.2 keys.

1 Sold for $43.41/ 1.87 = 23.21, ~23.2 keys.

1 Sold for $47.50/ 1.87 = 25.4 keys.

2 Sold for $46.00/ 1.87 = 24.59, ~24.6 keys.

1 Sold for $45.99/ 1.85 = 24.89, ~24.9 keys.

Excluding any and all other sales provided by bot.tf and Marketplace.tf, due to the sales being either too low for buy orders, or too high for sell orders. While it doesn't entirely and accurately represent the vastly different sale values, with the limited sale data provided, I had to wring together a price range. Going with 21.4 - 23.2 keys, due to current sellers being from 23 - 23.96 keys. The 23 keys listing is quite likely another quicksell listing, as every other sell orders is at least 24 keys, so I'm excluding that and the 22 keys listing.