Lol, 1.6 buds for this.

Sale 1:

Sold for DP Salty Dog(16) + 2 Keys in sweets:

http://backpack.tf/profiles/76561198033370726?time=1443769200

http://backpack.tf/profiles/76561198033370726?time=1443855600

Sweets have near ID, plus the buyer of the FR-0 had an open trade for the salty, despite bp.tf histories not matching

Salty was outdated at 25 at time, makes sense.

=18 Keys

Sale 2:

Quicksold for a S. TSDischarge + Parts Rifle?

http://backpack.tf/profiles/76561198189205206?time=1443855600

http://backpack.tf/profiles/76561198189205206?time=1443942000

Not using, ends up at 10 keys. Sold in under 24 hrs anyways

Sale 3:

Sold for... S Gibus(10) + 2 Keys in sweets?

http://backpack.tf/profiles/76561198120364620?time=1446796800

http://backpack.tf/profiles/76561198120364620?time=1447056000

= 12 keys

Sale 4:

Sold with ~ 1 Key in sweets for Miami Impaler:

http://backpack.tf/profiles/76561198048888857?time=1447056000

http://backpack.tf/profiles/76561198048888857?time=1447142400

Can't find a decent mini, but supports high end

Sale 5:

Sold for 12 keys...

http://backpack.tf/profiles/76561198028072716?time=1441954800

http://backpack.tf/profiles/76561198028072716?time=1442732400

=12 Keys

Sale 6:

Think he sold it for 20:

http://www.tf2outpost.com/trade/27494264

So, nice range we have here