Sellers:

http://www.tf2outpost.com/trade/9922406 (3 keys for a TEAMSPIRIT Stash week old) SOLD******

http://www.tf2outpost.com/trade/10045415 (up for 2 days no 3 key offers)

http://www.tf2outpost.com/trade/10096520 (up for 16 hours no 3 key offers)

http://www.tf2outpost.com/trade/9828359 (up for a week highest offer 2 keys 2 ref)

http://www.tf2outpost.com/trade/10094978 (up for 20 hours no 3 key offers)

http://www.tf2outpost.com/trade/9984604 (up for 5 days no stashes sold)

http://www.tf2outpost.com/trade/9988879 (up for 4 days asking for 3 keys painted purple)

http://www.tf2outpost.com/trade/10104139 (selling v.stash 2 keys 3.33 unsold)

http://www.tf2outpost.com/trade/10081615 (stash painted olive unsold 1 day)

http://www.tf2outpost.com/trade/10000898 ( unsold 3 keys 4 days)

http://www.tf2outpost.com/trade/9983829 (unsold 3 keys 5 days)

http://www.tf2outpost.com/trade/10058915 (unsold 3 keys 2 days)

http://www.tf2outpost.com/trade/10040906 (unsold 3 keys 2 days) ****SOLD

Some successful buyers at 2 keys

http://www.tf2outpost.com/trade/9062469

http://www.tf2outpost.com/trade/9796176

Offers:

http://www.tf2outpost.com/trade/9107861

-Guy in the comments bought one for 2 keys 2 ref

http://www.tf2outpost.com/trade/10096520

-Offer of Green All Father + Villain's Veil ~ 2.75-3 keys

http://www.tf2outpost.com/trade/9156022

-Offer of Vintage Killer's Kabuto ~ 3 keys

http://www.tf2outpost.com/trade/9400344

-Key + Gift Wrap + V. Camera Beard ~ 2.5 keys

Sold for 3 keys:

http://www.tf2outpost.com/trade/10061992

http://www.tf2outpost.com/trade/10040906 Check history

http://www.tf2outpost.com/trade/10045415 One offered 3 keys

http://www.tf2outpost.com/trade/9988879

Buyers:

http://www.tf2outpost.com/trade/10072645 buying ts stash for 3.25 keys (2.25-2.5 without paint)

http://www.tf2outpost.com/trade/10149382 buying for 2.5 keys

I'm stealing proof and a suggested price! Supreme scum bag!

Credits for proof:

-iWrangleN00Bs

-Sugoi★Shipin

-❤skaPANeas❤

-Sir J-j-jon [Warrior of Redwall]

Special thanks to iWrangleN00Bs for the previous suggestion.

PS. Some of the proof may be outdated.