The suggestion made 7 months ago is horribly accurate.

one of these days skeletal

Wayne'd for ~15 Buds(Sold in less than a day)

http://backpack.tf/profiles/76561198041681288?time=1412587963

Sold along with some other high tiers for a Misty Skull Coffin Kit(Not using, but leaving it just in case)

http://backpack.tf/profiles/76561198042518109?time=1412492400 -> http://backpack.tf/profiles/76561198042518109?time=1412838000

Sold for 20.5 Buds + a Pro KS Aussie Scattergun(3.7 with Overpay)(24.2 Total, rounded due to the scatter possibly being worth less at the time)

http://backpack.tf/profiles/76561198042518109?time=1415143841 -> http://backpack.tf/profiles/76561198042518109?time=1415347200938

http://www.tf2outpost.com/trade/23205938

Added 3 Buds for a Green Energy Team Captain(31, Offered)(28 Total)

http://backpack.tf/profiles/76561198018745305?time=1413073267 -> http://backpack.tf/profiles/76561198018745305?time=1413270000

http://www.tf2outpost.com/trade/23145246

Strange Australium Pro KS Scattergun mini suggestion

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

$106.00

$0.05(holy shit)

$134.98

$133.07

$140.00

$135.79

$140.00

$123.55

$121.80

$123.68

$141.00

$144.90

$98.77

$126.49

$120.32

$93.12

$93.12

$119.06

$119.06

$161.00

$128.50

$138.46

$129.47

$129.50

$125.00

$129.40

$129.00

$143.75

$143.72

$130.00

$125.00

$115.00

$149.49

$128.94

$149.50

$129.86

$148.34

$117.57

$128.58

$132.95

$140.00

$149.50

$149.50

$157.02

$157.02

$189.75

$169.86

$154.88

$154.99

$176.46

$170.00

The average comes out at $133.26(Roughly 53 Keys)

To support this:

http://www.tf2outpost.com/trade/24397297 Seller at 55 Keys, got offered 50.

http://www.tf2outpost.com/trade/24116220 Has a C/O of 55 Keys collecting, and 22 Keys + 24 Keys in Items for his set(which is just a bunch of items worth ~3 Keys)

http://www.tf2outpost.com/trade/24236840 Poorly bumped, but has an add for 52 Keys(his B/O)

Two sales, 24-28 should be fine.

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