Is this overpriced, or is Kill-a-Watt underpriced?

Sale 1. (09-10-2016)

Sold for a Scorching Flames Larrikin Robin.

Capped at B/O of 40 Keys

http://backpack.tf/profiles/76561198173968969#!/compare/1475971200/1476057600

http://www.tf2outpost.com/trade/28453233

Mini for the Larrikin Robin.

Quickbuyer at 40 keys.

https://gyazo.com/d058676ac130914e7d671e0e2949fb8a

Sale 2. (27-09-2016)

Sold for a Sunbeams Madame Dixie(43.5) + <0.25 key of sweets.

Taking as 44 Keys.

http://backpack.tf/profiles/76561198204824055#!/compare/1474848000/1474934400

no outpost.

Sale 3. (17-10-2016)

Mass quickbuy.

http://backpack.tf/profiles/76561198112279227#!/compare/1476576000/1476662400

Sale 4. (22-10-2016)

Quicksold for 36 Keys.

http://backpack.tf/profiles/76561198112279227#!/compare/1477094400/1477180800

http://www.tf2outpost.com/trade/28548246

Sale 5. (23-10-2016)

Untraceable sale.

http://backpack.tf/profiles/76561198116258680#!/compare/1477180800/1477267200

Sales at 40 and 44 Keys. Taking as that. None on market atm.