Proof:

Classies:

http://backpack.tf/classifieds/search/id/525734554dd7b8737e8b4567 (1 for 4.33, lots for 4.66, 1 for 4.88, lots for 5 ref)

Outpost:

Unsolds:

5 ref:

http://www.tf2outpost.com/trade/15138853 (<1 day)

http://www.tf2outpost.com/trade/15131399 (<1 day)

http://www.tf2outpost.com/trade/15141197 (<1 day)

http://www.tf2outpost.com/trade/15126613 (<1 day, has 2)

http://www.tf2outpost.com/trade/15116358 (1 day)

http://www.tf2outpost.com/trade/15125111 (<1 day)

http://www.tf2outpost.com/trade/15139183 (<1 day)

http://www.tf2outpost.com/trade/15143745 (<1 day)

http://www.tf2outpost.com/trade/15077504 (3 days)

http://www.tf2outpost.com/trade/15086961 (2 days)

http://www.tf2outpost.com/trade/15125721 (<1 day)

http://www.tf2outpost.com/trade/15113739 (1 day)

4.88 ref:

http://www.tf2outpost.com/trade/15131362 (<1 day)

Selling:

4.66 ref:

http://www.tf2outpost.com/trade/15144638 (<1 hour)

http://www.tf2outpost.com/trade/15097587 (1 day)

http://www.tf2outpost.com/trade/15137906 (<1 day)

http://www.tf2outpost.com/trade/15143170 (<1 day)

http://www.tf2outpost.com/trade/15131246 (<1 day)

http://www.tf2outpost.com/trade/15103287 (1 day)

http://www.tf2outpost.com/trade/15141391 (<1 day)

4.33 ref:

http://www.tf2outpost.com/trade/15135741 (<1 day, has 2)

http://www.tf2outpost.com/trade/15142683 (<1 day)

4 ref:

http://www.tf2outpost.com/trade/15144247 (<1 hour)

http://www.tf2outpost.com/trade/15135924 (<1 day)

http://www.tf2outpost.com/trade/15105864 (1 day)

http://www.tf2outpost.com/trade/15135606 (<1 day)

5 ref isn't really happening anymore. Lots of sellers at 4.66 ref and even a decent amount below that. 4-4.33 is a bit of a quicksell for now. 4.66 flat will be fine.

Thanks for voting : )