Challenge 19, Team F.L.A.M.B.E.S!

75th suggestion, made by Beaser!

https://marketplace.tf/items/tf2/137;5;u7

$24.67 / $1.70 = 14.51 keys

$24.67 / $1.71 = 14.43 keys

$22.99 / $1.90 = 12.10 keys x2

https://backpack.tf/item/8427042439

Sale at 11 keys - https://imgur.com/enMjxVH

Sale #1 -

Voltaic HFoHA (7.5) + Aussie Blut (5)

https://backpack.tf/profiles/76561198332891409#!/compare/1589846400/1589932800

HFOHA Mini:

https://marketplace.tf/items/tf2/30662;5;u96

$12.95 / $1.88 = 6.89 keys

$18.7 / $1.90 = 9.84 keys

$14.65 / $1.90 = 7.71 keys

$14.8 / $1.88 = 7.87 keys

$12.1 / $1.92 = 6.30 keys

$17.68 / $1.91 = 9.26 keys

$17.68 / $1.92 = 9.21 keys

$17.68 / $1.94 = 9.11 keys

$15.95 / $2.00 = 7.97 keys

Sales at 6.5, 7, 7.5, 7.5, 8 - https://imgur.com/YdRxbwA

Anything lower than 7 is below buyers, calling 9 high

Taking 7-8

Sale #2 -

Untrace

https://backpack.tf/profiles/76561198257264924#!/compare/1589587200/1589932800

sale 3:

https://backpack.tf/profiles/76561198080179568#!/compare/1590192000/1590278400

https://backpack.tf/profiles/76561198181015431#!/compare/1589673600/1591315200

Sold for 12 keys

total sales @:

11, 12, 12, 12, 12.5, 14, 15 keys

buyers up to ~9 keys,

seller at 11 keys unsold for 2 weeks,

let's try 11 - 13 keys.