The difference between my mini on another suggestion and the suggestion for this was screwing with me, and I think the answer is somewhere in the middle. I wouldn't normally counter but the guy told me to if I disagreed so... yeah.

Sale 1

Sold/offered with conga (~1) for aussie wrench (23-24) = 23.5 - 1 = 23 keys

Seller before: http://backpack.tf/profiles/76561198097980107?time=1427439600 (March 27th)

Seller after: http://backpack.tf/profiles/76561198097980107?time=1427526000 (March 28th)

Sale 2

Sold for dead presidents das guttenkutteharen (26) = 26 * 0.9 = 23 keys

Seller before: http://backpack.tf/profiles/76561198086712165?time=1427871600 (April 1st)

Seller after: http://backpack.tf/profiles/76561198086712165?time=1428044400 (April 3rd)

Sale 3

Sold for gifted dead pres your worst nightmare (17) = 17 * 0.9 = 15 keys - quicksell. bought on 2nd, sold by 4th, not advertised.

Seller before: http://backpack.tf/profiles/76561198110622804?time=1428130800 (April 4th)

Seller after: http://backpack.tf/profiles/76561198110622804?time=1428476400 (April 8th)

Sale 4

http://www.tf2outpost.com/trade/23116334 - no idea, huge gaps in the bp histories and nothing on outpost

Sale 5

Sold for frostbite halogen headlamp - outdated, but this is the only recent sale so can't do a mini. ignoring this one.

Buyer before: http://backpack.tf/profiles/76561198097169690?time=1429426800 (April 19th)

Buyer after: http://backpack.tf/profiles/76561198097169690?time=1429599600 (April 21st)

Sale 6

Sold for scorching hard counter (28) = 25 keys

Seller before: http://backpack.tf/profiles/76561198061890230?time=1429513200 (April 20th)

Seller after: http://backpack.tf/profiles/76561198061890230?time=1429599600 (April 21st)

Sale 7

Sold/offered with haunted ghosts bootleg base metal billycock (35) for g fetti thirst blood (45) = 45 - 35 = 10 keys - outlier

Seller before: http://backpack.tf/profiles/76561198122631490?time=1429081200 (April 15th)

Seller after: http://backpack.tf/profiles/76561198122631490?time=1429167600 (April 16th)

Mini on dp das gutten:

Sold for terror-watt combustible kabuto (29) = 29 * 0.9 = 26 keys

Seller before: http://backpack.tf/profiles/76561198001581101?time=1425024000 (February 27th)

Seller after: http://backpack.tf/profiles/76561198001581101?time=1425110400 (February 28th)

Micro for terror-watt kabuto:

Sold/offered with ~2.5 keys sweets for kill-a-watt aviator assassin (31) = 31 - 2.5 = 29 keys

Seller before: http://backpack.tf/profiles/76561198144892009?time=1423123200 (February 5th)

Seller after: http://backpack.tf/profiles/76561198144892009?time=1423209600 (February 6th)

Mini for gifted dp bucket hat:

Sold for 1 bud (12) and a bmoc (~5.5) = 17 keys

Seller before: http://backpack.tf/profiles/76561198021272428?time=1424505600 (February 21st)

Seller after: http://backpack.tf/profiles/76561198021272428?time=1424592000 (February 22nd)

Mini for g fetti thirst blood:

Sold/offered with 4 keys and ~24 keys in sweets for a arcana virus doctor (70-75) = 72.5 - 28 = 45 keys

Buyer before: http://backpack.tf/profiles/76561198034183306?time=1427871600 (April 1st)

Buyer after: http://backpack.tf/profiles/76561198034183306?time=1427958000 (April 2nd)

Low sale seems like a quicksell, as it's quite far below the other sales plus it... sold quickly, lol. Still not very good at ranges though so any feedback appreciated.