Memory Leak Private Eye

Sale #1:

http://www.tf2outpost.com/trade/19474916

Sold for Blizzardy Storm Dragonborn Helmet (1.6) + Terror-Watt Bot Dogger (1)

Items histories:

http://www.tf2outpost.com/item/440,2575003862

http://www.tf2outpost.com/item/440,2575003864

Total: ~2.6 buds

Sale #2:

http://www.tf2outpost.com/trade/19462833

Sold for Stormy Storm A Rather Festive Tree (1.8) + little sweets (Team Captain, Gentleman's Ushanka, Desert Marauder and bunch of random weapons)

Seller's backpack:

http://backpack.tf/profiles/76561198050931408?time=1398409200 - before

http://backpack.tf/profiles/76561198050931408?time=1398495600 - after

Total: ~1.95 buds, rounding to 2 buds

Sale #3:

http://www.tf2outpost.com/trade/19041673

Sold for Terror-Watt Pirate Bandana (unpriced) - http://www.tf2outpost.com/item/440,2501449932

Mini-research for Bandana, latest sale:

Sold for 2 pure + sweets (his buyout was 2.5) - http://www.tf2outpost.com/trade/19546914

So this sale is ~2.2-2.3 buds

I didn't calculate an overpay in the first time, sorry for resuggesting, guys.

Update: mini-research for Terror-Watt Bot Dogger. Latest sale:

http://www.tf2outpost.com/trade/19719405 - sold for 1 buds + 2 keys = ~1.15 buds

Buyer's backpack:

http://backpack.tf/profiles/76561198091975916?time=1399705200 - before

http://backpack.tf/profiles/76561198091975916?time=1399791600 - after

Looks like the low-end of the outdated Terror-Watt Bot Dogger is still correct.