Thanks Chicken for the help :D

Sale 1:

Sold for a Power Surge Modest Metal Pile of Scrap and a gifted Blizzardy Storm Hottie's Hoodie + 2 keys

(47 + 20)0.9 + 2 = 62.3 rounding to 62 keys

http://www.tf2outpost.com/trade/25491872

http://backpack.tf/profiles/76561197997541046?time=1427958000 (April 2nd)

http://backpack.tf/profiles/76561197997541046?time=1428390000 (April 7th)

Sale 2:

Sold for a gifted Kill-a-Watt Crone's Dome + 1 bud (buds were 6 keys)

(80*0.9) + 6 = 78 keys

http://www.tf2outpost.com/trade/25630374

http://backpack.tf/profiles/76561198133129648?time=1428476400 (April 8th)

http://backpack.tf/profiles/76561198133129648?time=1428562800 (April 9th)

Sale 3: (outlier)

After math this sale comes out to 7 keys, a definite outlier

http://backpack.tf/profiles/76561198008608496?time=1430377200 (April 30th)

http://backpack.tf/profiles/76561198008608496?time=1430463600 (May 1st)

Notes:

Mini for the gifted Blizzardy Storm Hottie's Hoodie: ~20

Sold for a Green Black Hole Handyman's Handle

(22*0.9) = 19.8 rounding to 20 keys

http://backpack.tf/profiles/76561198074603898?time=1430982000 (May 7th)

http://backpack.tf/profiles/76561198074603898?time=1431154800 (May 9th)

Mini for the Kill-a-Watt Crone's Dome: ~80

There aren’t any recent sales on the gifted one, but the same exact one is being sold for 70 keys currently

http://www.tf2outpost.com/trade/25943818

Credit to Chicken

crones sold for DP bear+planets mullet+steaming tipplers+44 keys, comes out to 83, 70 because of b/o here: http://www.tf2outpost.com/trade/25943818

then sold for duped PE buto ( http://backpack.tf/profiles/76561198090737788?time=1432364400 ---> http://backpack.tf/profiles/76561198090737788?time=1432278000 ) (duped)

crone is definitely worth more than 70, his 70 trade was only up for 3 days

however

selling at 80 was up for a while: http://www.tf2outpost.com/trade/25784711

Conclusion:

Sales at 62 and 78 keys, taking the final range at 62 to 78 keys.