Just made a purchase on one, seller was asking for a buyout of 100 keys, he accepted this: (This is my first price suggestion.)

Sale:

Orbiting Planets Kabuto - 20 keys

Blizzardy Storm Tartan Tyrolean - 21 keys

Strange Starstorm Slumber Nasty Norsemann - 25 keys for stock, sellers at 35 - 50 keys on bp.tf so we can price Strange variant ~25 - 35 keys

Strange Killstreak Direct Hit w/ part (ignored) - lowest Sellers at ~10 ref (0.36 keys)

Specalized Killstreak Sharp Dresser - lowest Sellers at ~1.25 keys

Genuine Specialized Killstreak AWPer Hand - lowest Sellers at ~1.33 keys

(those 3 weapons ~3 keys avg.)

Added 5 keys pure

Total ~ 79 keys

Proof:

https://steamcommunity.com/id/tiredant/inventoryhistory/

https://steamcommunity.com/id/tiredant/tradeoffers/sent/?history=1

I have screenshots of the sale and the sellers @ bp.tf. Just ask for them, otherwise the URLs should be enough proof.