Sold for Fountain of Delight Conga (22 Keys) + North Star Covert Covers (50 Keys) + 50 Keys = 122 Keys ~120 Keys

https://i.imgur.com/GAJeXMC.png

Seller's B/O was 120 Keys. Also claimed that he had received another 120 Keys pure offer before.

https://i.imgur.com/9iWeQWo.png

Mini for Fountain of Delight Conga:

https://backpack.tf/classifieds?item=Taunt%3A+Conga&quality=5&tradable=1&craftable=1&particle=3005&australium=-1&killstreak_tier=0

https://imgur.com/a/ABflvfu

Current Classifieds has:

Sellers: 29 Keys

Buyers: 22 Keys

Taking buyers price since the B/O was already exceeded for the unusual in this suggestion.

Mini for North Star Covert Covers:

https://i.imgur.com/rsEOJCP.png

I bought it for GBP86.99. Keys were GBP1.73 on 1st of January.

86.99/1.73 = 50 Keys

https://backpack.tf/classifieds?item=Covert+Covers&quality=5&tradable=1&craftable=1&particle=318&australium=-1&killstreak_tier=0

https://i.imgur.com/zKpsKF2.png

Current classifieds has:

Sellers: 50 Keys Minimum

Buyers: 44 Keys Maximum