I like Demos

Throwing pipes to and fro

Sellers: - https://snag.gy/ZbcQ37.jpg

https://backpack.tf/item/226422685 - 2 Days @ 18 Keys

Sale 1)

https://marketplace.tf/items/47;5;u7 - Sold for ~(15) "Keys"

Sale 2)

https://backpack.tf/profiles/76561198093050628#!/compare/1529366400/1529625600 - Sold for a Massed Flies Prince Tavish's Crown (10) + ~3 Keys in Sweets = (13) Keys#

Sale 3)

https://backpack.tf/profiles/76561198053747026#!/compare/1532908800/1532995200

https://backpack.tf/profiles/76561198045287357#!/compare/1532995200/1533081600 - Sold for (12) Keys

Not all keys match https://backpack.tf/item/6985395269

Sale 4)

https://backpack.tf/profiles/76561197987574214#!/compare/1527552000/1527724800 - Sold for 9 Keys

Sale 5)

https://backpack.tf/profiles/76561198337734785#!/compare/1527811200/1527897600

https://backpack.tf/profiles/76561198065665295#!/compare/1527724800/1527897600 - Sold for ~(11) Keys

Sale 6)

https://backpack.tf/profiles/76561198065665295#!/compare/1529366400/1529625600 - Untrace

Sale 7)

https://backpack.tf/profiles/76561198002757046#!/compare/1526428800/1526515200

https://backpack.tf/profiles/76561198167805463#!/compare/1526515200/1526774400 - No match

Sale 8)

https://backpack.tf/profiles/76561198088922498#!/compare/1528070400/1528156800

https://backpack.tf/profiles/76561198002757046#!/compare/1528070400/1528156800 - No match

Sale 9)

https://backpack.tf/profiles/76561198337308198#!/compare/1529193600/1529539200

https://backpack.tf/profiles/76561198060370030#!/compare/1529452800/1529539200 - Bulky

Sale 10)

https://backpack.tf/profiles/76561198060370030#!/compare/1529798400/1529884800

https://backpack.tf/profiles/76561198262354524#!/compare/1529798400/1529884800 - Don't match

Sale 11)

https://backpack.tf/profiles/76561198165055074#!/compare/1530057600/1530144000

https://backpack.tf/profiles/76561198262354524#!/compare/1530057600/1530144000 - Bulky

Sale 12)

https://backpack.tf/profiles/76561198068844434#!/compare/1529798400/1530144000

https://backpack.tf/profiles/76561198165055074#!/compare/1530144000/1530230400 - Sold for a Smoking Hot Dogger (18)

Sale 13)

https://backpack.tf/profiles/76561198218628708#!/compare/1530662400/1530748800

https://backpack.tf/profiles/76561198118084473#!/compare/1530489600/1530748800 - Untrace

Sale 14)

https://backpack.tf/profiles/76561198218628708#!/compare/1530489600/1530576000 - Bulky

Sale 15)

https://backpack.tf/profiles/76561198032016356#!/compare/1530230400/1530316800

https://backpack.tf/profiles/76561198128953533#!/compare/1530230400/1530316800 - Sold for ~(11) Keys

Sale 16)

https://backpack.tf/profiles/76561198068844434#!/compare/1530230400/1530316800

https://backpack.tf/profiles/76561198032016356#!/compare/1530230400/1530316800 - Sold with 5 Keys for a Searing Plasma Full Metal Drill Hat (22) = (17) Keys

Sale 17) (Credits to Kanna)

https://imgur.com/a/5SDwi85 - Sold for ~(14) "Keys"

Sales we have are:

11, 11, 12, 13, 14, 15, 17 and 18

17 and 18 are outweighed by a lot of lower data points

Thanks =)