4 keys doesn't happen much anymore. There are a lot of highballers for this item so it was hard to get valid proof.

Unsolds for 4 keys

http://www.tf2outpost.com/trade/15653654 1 day.

http://www.tf2outpost.com/trade/15630647 2 days.

http://www.tf2outpost.com/trade/15621959 2 days.

http://www.tf2outpost.com/trade/15644325 2 days.

http://www.tf2outpost.com/trade/15636192 2 days. (with part)

http://www.tf2outpost.com/trade/15592387 3 days.

http://www.tf2outpost.com/trade/15614523 3 days.

http://www.tf2outpost.com/trade/15594834 3 days.

http://www.tf2outpost.com/trade/15497834 9 days.

Selling for 3.8 keys

http://www.tf2outpost.com/trade/15684204

http://www.tf2outpost.com/trade/15645237 Unsold 2 days.

Selling for 3.5 keys

http://www.tf2outpost.com/trade/15651246

http://www.tf2outpost.com/trade/15630570 "If this does not go soon I will be lowing the price to 3.55"

http://www.tf2outpost.com/trade/15669637 Sold quickly.

http://www.tf2outpost.com/trade/15666281 Sold quickly, (with part).

CLASSIFIEDS

http://imgur.com/HUjvKqA

- 1 seller for 3.6 keys

- 1 seller for 3.8 keys (2 days old)

- 8 sellers for 4 keys (ranging from 5 hours old to 1 week old)