The things I get myself into.

Sold for a Max's Severed Head(24 Keys at the time) and 7 Keys(31 Keys total)

http://backpack.tf/profiles/76561198046238906?time=1436166000

http://backpack.tf/profiles/76561198046238906?time=1436252400

Sold for 24 Keys and a Blizzardy Storm Berliner's Bucket Helm(13 Keys with Overpay)(37 Keys total)

http://backpack.tf/profiles/76561198101449372?time=1439449200

http://backpack.tf/profiles/76561198101449372?time=1439535600

Sold for an Australium Pro KS Knife(35 Keys with Overpay)

http://backpack.tf/profiles/76561198139796077?time=1442559600

http://backpack.tf/profiles/76561198139796077?time=1442646000

Sold or a Max's Severed Head(24 Keys at the time), a Bubbling Hetman's Headpiece(9 Keys with Overpay) and ~8 Keys in Sweets(7 Keys with Overpay)(40 Keys total)

http://backpack.tf/profiles/76561198060616510?time=1435906800

http://backpack.tf/profiles/76561198060616510?time=1435993200

Sold for a Purple Confetti Flipped Trilby(17 Keys with Overpay), 5 Keys and ~17 Keys in Sweets(15 Keys with Overpay)(37 Keys total)

http://backpack.tf/profiles/76561198127485122?time=1440831600

http://backpack.tf/profiles/76561198127485122?time=1440918000

Sold for a Miami Nights Soldered Sensei(16 Keys with Overpay), a Miami Nights Birdcage(13 Keys with Overpay), an Australium Pro KS Axtinguisher(10 Keys with Overpay) and ~3 Keys in Sweets(42 Keys total)

http://backpack.tf/profiles/76561198106511423?time=1440399600

http://backpack.tf/profiles/76561198106511423?time=1440486000

http://backpack.tf/profiles/76561198071737757?time=1440399600

http://backpack.tf/profiles/76561198071737757?time=1440486000

Sold for a Stormy Storm Executioner(32 Keys with Overpay)

http://backpack.tf/profiles/76561198178057793?time=1441782000

http://backpack.tf/profiles/76561198178057793?time=1441954800

Australium Pro KS Knife mini suggestion

All recent sales on the SCM(Keys = $2.49): http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Knife

$92.00

$89.99

$95.47

$72.73

$96.49

$96.49

$90.04

$100.47

$108.00

$115.00

$106.66

$99.49

$99.49

$107.59

$108.10

$105.62

$85.01

$86.90

$87.13

The average comes out at $96.98(Roughly 39 Keys)

Australium Pro KS Axtinguisher mini suggestion

All recent sales on the SCM(Keys = $2.49): http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Axtinguisher

$32.12

$29.88

$24.61

$25.30

$26.93

$11.71

$24.00

$28.15

$23.00

$25.51

$31.00

$26.19

$28.45

$32.55

$29.01

$28.49

$25.83

$29.97

$29.79

$22.85

$29.41

$29.41

$29.18

$30.63

$28.75

$29.50

$30.85

$29.99

The average comes out as $27.60(Roughly 11 Keys)

Sales seem to fit, 31-42 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.