That is odd..

Sales

Sale 1: Sold for Ooze Napper's Respite (60 keys) + GE Plumber's Cap (97.5 keys)

https://backpack.tf/profiles/76561198125791160#!/compare/1599868800/1599955200

https://backpack.tf/profiles/76561198257109478#!/compare/1599868800/1600128000

97.5 + 60 = 157.5 rounding to 158 keys

Last known buyout was 125 keys, the sale caps at 125.

https://bot.tf/stats/listings/MLVVW7PJ

Only recent sale for the Napper's is for 60 keys:

https://backpack.tf/profiles/76561198183424550#!/compare/1598832000/1599523200

https://backpack.tf/profiles/76561198257109478#!/compare/1599004800/1599177600

Unfortunately there is a buyer for 60, for around a month now, which makes this low and cannot update the price of the Napper's until a new sale (above buyers).

Fortunately this is good enough for a mini, as there is a buyout to cap. (I guess it does not matter, as buyers are up to 60 anyways)

Marketplace

https://marketplace.tf/items/tf2/30001;5;u87

Nothing recent.

Classifieds

https://gyazo.com/07ee84f2b10c8e28dd96cb58986b283a

Summary

Sales at 125.

Conclusion

Going with 125 here.