The boxcar is probably going to be high looking at sellers. However, nearly all other sales on it are bulk or sales for other new hats

Tesla protector + max and sweets, no more than 90 based on the current protector seller

http://www.tf2outpost.com/trade/28668704 Had a BO of 90 as well

http://backpack.tf/profiles/76561198119534537#!/compare/1482278400/1482364800

Other sales on that are all involving other hween hats..

http://backpack.tf/profiles/76561198083621911#!/compare/1482192000/1482278400

http://backpack.tf/profiles/76561198089263438#!/compare/1482105600/1482192000

may be worth looking into

Sold + max, 11 keys and 3 in sweets for slumber cone

http://backpack.tf/profiles/76561198040489983#!/compare/1481760000/1481932800

that too needs minis. Has a seller at 109, making that sale <80

Sold for keys, idk how many

http://www.tf2outpost.com/trade/28611877 no more than 75 though

http://backpack.tf/profiles/76561198138240511#!/compare/1480636800/1480723200

Sold for c9 teutonic (~30) + ks aussie rocket (~42) (tricky to track, but histories match)

http://backpack.tf/profiles/76561198208062409#!/compare/1482019200/1482105600

http://backpack.tf/profiles/76561198107798930#!/compare/1482019200/1482105600

teutonic'd need a mini but wont be far off. Sale will be around 70

Bulk thatd be far below 0

http://backpack.tf/profiles/76561198228523644#!/compare/1481068800/1481673600

idk

http://backpack.tf/profiles/76561198129763745#!/compare/1482105600/1482451200

Sold for stormy cotton

http://backpack.tf/profiles/76561198119629032#!/compare/1481932800/1482019200

http://backpack.tf/profiles/76561198129935698#!/compare/1481932800/1482019200

Thats obscenely overpriced and could do with a drop

The vivid tipped in your sale had a BO of 100

http://www.tf2outpost.com/trade/28591167

So thats no higher than 95 here, at which that sale is closer to 80 as well

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All other sales on this taunt seem to be bulk

http://www.tf2outpost.com/trade/28640035 this sold for csgo I think, but cant find what since bps wont update. BO supports this is high