Need this for a mini.

Sales

Sale 1: Sold for 55 keys?

https://backpack.tf/profiles/76561198002757046#!/compare/1598054400/1598140800

Buyout was 56 though..

https://bot.tf/stats/listings/YD1NW3VL

Sale 2: Sold to buyorder for about 55 keys~

https://backpack.tf/profiles/76561198035566253#!/compare/1597708800/1601510400

https://backpack.tf/profiles/76561198002757046#!/compare/1597622400/1597708800

https://bot.tf/stats/listings/42981ZO5

Sale 3: Untrace

https://backpack.tf/profiles/76561199022546649#!/compare/1600128000/1600214400

https://backpack.tf/profiles/76561198188093413#!/compare/1600041600/1600128000

Sale 5: Sold for 60 keys

https://backpack.tf/profiles/76561197993708178#!/compare/1601856000/1602028800

https://bot.tf/stats/listings/4O6VRV5G

Sale 6: Sold with 15 keys for Frostbite Towering Titanium Pillar of Hats (60 keys)

https://backpack.tf/profiles/76561198377298887#!/compare/1600732800/1600992000

https://backpack.tf/profiles/76561197993708178#!/compare/1600732800/1600992000

60 - 15 = 45 keys

Sale 7: Sold for Scorching Flames Noble Nickel Amassment of Hats

https://backpack.tf/profiles/76561198879344444#!/compare/1600992000/1601337600

https://backpack.tf/profiles/76561198377298887#!/compare/1600732800/1600992000

Going to use there, as there are fewer sales there.

Sale 8: Sold for 58 keys

https://backpack.tf/profiles/76561198209640976#!/compare/1600905600/1600992000

https://backpack.tf/profiles/76561198879344444#!/compare/1600905600/1600992000

https://gyazo.com/1ab054221bc3d064a2182666fcbb2b9f - Thank you BlazingHailfire for the screenshot!

https://bot.tf/stats/listings/MLVWNG78

Sale 9: Looks bulky

https://backpack.tf/profiles/76561198075068529#!/compare/1600473600/1600905600

https://backpack.tf/profiles/76561198209640976#!/compare/1600646400/1600732800

Sale 10: Sold for Vivid HWNN + 10 keys

https://backpack.tf/profiles/76561198114402400#!/compare/1599868800/1599955200

https://backpack.tf/profiles/76561198075068529#!/compare/1599868800/1600300800

Using there, check comments.

HWNN: https://backpack.tf/suggestion/5f4156ae70f3724ad066b407

Sale 11: Sold with 5 keys for Strange Professional Killstreak Australium Sniper Rifle (45~)

https://backpack.tf/profiles/76561198013571735#!/compare/1599091200/1599523200

https://backpack.tf/profiles/76561198114402400#!/compare/1599264000/1599350400

45 - 5 = 40 keys

Sniper Rifle: https://backpack.tf/classifieds?item=Sniper%20Rifle&quality=11&tradable=1&craftable=1&australium=1&killstreak_tier=3

https://gyazo.com/ecb529341255e034313cd49e79fcd0ff

Sellers are at around 45~, while buyers are around 44-46~.

Going with 45 here.

Sale 12: Sold for Cloud 9 Killer Exclusive + 15 keys

https://backpack.tf/profiles/76561198156255538#!/compare/1598054400/1598140800

https://backpack.tf/profiles/76561198013571735#!/compare/1598140800/1598227200

49 + 15 = 64 keys

Buyout was 60

https://bot.tf/stats/listings/YD1NW3VL

Sale 13: Sold with 32 keys for GE HWNN (95.5 keys)

https://backpack.tf/profiles/76561198156255538#!/compare/1596153600/1596240000

https://backpack.tf/profiles/76561198156255538#!/compare/1596153600/1596240000

95.5 - 32 = 63.5 rounding to 64 keys

Sale 14: Sold for 59 keys

https://backpack.tf/profiles/76561198985910282#!/compare/1594771200/1595376000

https://backpack.tf/profiles/76561198883676572#!/compare/1594166400/1596067200

https://bot.tf/stats/listings/Y5ZQ9DW7

Marketplace sales

https://marketplace.tf/items/tf2/388;5;u13

Nothing recent.

https://marketplace.tf/items/tf2/388;5;u13;strange

August

130 on August 19 (130/1.79 = 73~)

https://manic.tf/keyprice/?at=2020-08-19

https://backpack.tf/item/702591782

Listings during the time: https://bot.tf/stats/listings/4EPN7XD2

September

129.99 on September 5 (129.99/1.83 = 71~)

https://manic.tf/keyprice/?at=2020-09-05

I think the other sale was this one: https://bot.tf/stats/listings/MQ0Z5OK2 > https://bot.tf/stats/listings/429Q31QG

And considering a past screenshot, Xergoyf would have taken 60 keys. https://bot.tf/stats/listings/MVQ25322

Current Classifieds

https://backpack.tf/classifieds?item=Private%20Eye&quality=5&tradable=1&craftable=1&australium=-1&particle=13&killstreak_tier=0

https://gyazo.com/305ae88e60301bed40a0c6dffa3ccf29

Seller at 60 for 11 days now.

Summary

Sales at 40, 45, 55, 55, 58, 59, 60, 60, and 64.

Marketplace sales at 60 and 73.

Conclusion

Buyers up to 51, excluding 40 and 45 as low outliers.

Seller at 60 for 11 days, and combined with all the sales at lower, excluding 64 and 73 as high outliers here.

Going with 55-60 here.

Take it easy.