Resuggested as from polar's request*

Still 1 of 1 on the market, other owners (unboxers) are not interested in selling

Only 3 (2) usable sales that i found after diggin' thru minis hell :

Sale #1

https://backpack.tf/profiles/76561198024410622#!/compare/1488240000/1488326400

Sold for Clean Secret Exe (active price suggestion at 300) + Infernal Flames Victory Lap (active price suggestion at 100-172) + Holy Grail Oblooterated (65) + ~10 keys in killstreak kits = 475

https://backpack.tf/suggestion/58b28f8c0e2cad552f199f72

https://backpack.tf/suggestion/58acf4dae3387714f43ba238

Can't find any mini for Oblooterated, all valid sales are bulk

Sale #2

https://backpack.tf/profiles/76561198058892756#!/compare/1486512000/1486684800

Sold for PE Tipped Lid (450, indate) + SS Vive la France (active price suggestion at 56, but looks like not enough evidence or something)

Sellers for tipped at ~800$, 400 and 435 keys : http://i.imgur.com/tzxbDiT.png

https://backpack.tf/suggestion/58c566d0c440451d0928df0d

Sale #3

https://backpack.tf/profiles/76561198120467518#!/compare/1489104000/1489190400

idk either, he said that he really wanted those as a end-game (then he immediately traded those + 30 keys for unusual stickybomb, rip)

~200

OUTLIER

polar's words :

"The PE casemaker has been on the market at 400 pure for a month now (closed last trade) and the PE tipped lid had a b/o of 400 - http://www.tf2outpost.com/trade/28751846. So sale 2 is also realistically closer to 400. I would probably go with 400-475 here"

Final verdict :

Alrighty, going with 400-475 then.