A SBTWC train comes this way.

Sale 1

Sold for a TF Logo Private Eye (mini at 22) + 11 keys

http://backpack.tf/profiles/76561198159733560#!/compare/1469404800/1469577600

http://backpack.tf/profiles/76561198027694776#!/compare/1469491200/1469577600 (11 keys are seen here)

http://www.tf2outpost.com/trade/28370254 ----- No B/O here

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Mini for the Private Eye: Sold for 11 keys + SKS Collector's Ambassador (micro at 9.5) + Strange Weight Room Warmer (micro at 4)

http://backpack.tf/profiles/76561198027694776#!/compare/1469923200/1470009600

Mini for the Ambassador: Seller for ~9.5, taking 9.5

http://imgur.com/a/I2DKT

Mini for the WRW: Sales around ~4 keys, taking 4 keys

http://steamcommunity.com/market/listings/440/Strange%20Weight%20Room%20Warmer

11 + 9.5 + 4 = ~25 keys, but was listed by other owner for 22 keys, so capping it there: http://www.tf2outpost.com/trade/28392878

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=======> 22 + 11 = 33 keys

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Other sales involve Scrap.tf

Sellers

- No sellers at the time.

Summary

- Sale for 33.

Going with 33 keys. Criticism appreciated!