Sale 1

Sold for misty skull crone's dome (420-501), pe crone's dome (660-770) and a houwar (144-152) = (460.5 + 715 + 148) * 0.9 = 1191 = 1200 keys

Buyer before: http://backpack.tf/profiles/76561198040812694?time=1429513200 (April 20th)

Buyer after: http://backpack.tf/profiles/76561198040812694?time=1429772400 (April 23rd)

Sale 2 - ty to [SC-Λ]Groovypanda #done for links on this sale in his previous suggestion

Sold for haunted phantasm jr KE (260), haunted ghosts antlers (500), burning greased lightning (no recent sales, using current price - 330) and 30 buds (12) pure = (260 + 500 + 330) * 0.9 + 360 = 1341 = 1350 keys

http://www.tf2outpost.com/trade/24661427

Seller before: http://backpack.tf/profiles/76561198027097747?time=1424419200 (February 20th)

Seller after: http://backpack.tf/profiles/76561198027097747?time=1424505600 (February 21st)

Sale 3 - ty to [SC-Λ]Groovypanda #done and Randy The Shpee of New Jersey for link from previous suggestions

Sold for 150 buds (5.5) pure = 825 keys - outlier

http://www.tf2outpost.com/trade/20272154

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Minis

Crone's dome had 2 sales with different enough values to warrant a range, so including both and will use the range for the above sale.

Mini #1 for misty crone's dome:

Sold for chiroptera venenata rifleman (103), knifestorm wraith wrap (144-156) and duped secret brown bomber (214) = (103 + 150 + 214) * 0.9 = 420 keys

http://backpack.tf/profiles/76561198057621896?time=1428735600 (April 11th)

http://backpack.tf/profiles/76561198057621896?time=1429081200 (April 15th)

Micro for chiroptera rifleman:

Offered with 70 keys for morning glory exquisite rack (155-190) = 172.5 - 70 = 103 keys - offered so no overpay

http://www.tf2outpost.com/trade/25612669

Micro for secret brown bomber:

Offered with beams yellow belt (150) and 10 keys for arcana tough stuff muffs (no recent sales or BOs lower than current price, so using that - 374) = 374 - 150 -10 = 214

Seller before: http://backpack.tf/profiles/76561198026372829?time=1428649200 (April 10th)

Seller after: http://backpack.tf/profiles/76561198026372829?time=1428735600 (April 11th)

Mini #2 for misty crone's dome:

Sold for orbiting fire crone's (77.5), electrostatic crone's (173), nuts n bolts crones (30-35), stormy 13th hour brigade helm (94) and duped vintage max's (180) = (77.5 + 173 + 32.5 + 94 + 180) * 0.9 = 501 keys

Buyer before: http://backpack.tf/profiles/76561198040812694?time=1429254000 (April 17th)

Buyer after: http://backpack.tf/profiles/76561198040812694?time=1429513200 (April 20th)

Micro for orb fire crone's:

Sold/offered with 2.5 keys for scorching hermes (80) = 80 - 2.5 = 77.5 keys

Seller before: http://backpack.tf/profiles/76561198098794519?time=1428908400 (April 13th)

Seller after: http://backpack.tf/profiles/76561198098794519?time=1429081200 (April 15th)

Micro for electrostatic crone's:

Sold for darkblaze tyrant's helm (192) = 192 * 0.9 = 173 keys

Seller before: http://backpack.tf/profiles/76561198087204636?time=1428303600 (April 6th)

Seller after: http://backpack.tf/profiles/76561198087204636?time=1428390000 (April 7th)

Micro for stormy 13th hour brigade helm:

Sold/offered with ~6 keys in sweets for scorching thirst blood (92-108) = 100 - 6 = 94 keys

Seller before: http://backpack.tf/profiles/76561198067893369?time=1424937600 (February 26th)

Seller after: http://backpack.tf/profiles/76561198067893369?time=1425024000 (February 27th)

Micro for duped vintage max's:

http://www.tf2outpost.com/trade/25587157 sold for 180

http://www.tf2outpost.com/trade/24946568 BO was 180

Mini for haunted phantasm jr ke:

Sold with peace sign mask of the shaman (310) and 100 buds (9.5) for strange sunbeams law (no other sales of the strange one so taking regular price - 1520) = 1520 - 310 - 950 = 260 keys

Seller before: http://backpack.tf/profiles/76561198041060358?time=1427353200 (March 26th)

Seller after: http://backpack.tf/profiles/76561198041060358?time=1427439600 (March 27th)

Mini on haunted ghost antlers:

No recent sales, using 500 before overpay for reasons described here:

http://backpack.tf/vote/id/551e0eebba8d881a608b4634

The last suggestions were closed because it was unclear if ~800 was an outlier, so the new sale at ~1200 confirms it for me. If I've done anything wrong please let me know, feedback welcome. Ty to Leo [↯], Mindacos and Victoria/Rachel/Surs for tips.