If you have any constructive criticism, support, or counter-proof, let me know below!

Buyers at 2.66 ref:

http://www.tf2outpost.com/trade/14387876

http://www.tf2outpost.com/trade/25836252

Sold at 3 ref:

http://www.tf2outpost.com/trade/25307935 (bp links are for bot)

• bp on 5/1: http://backpack.tf/profiles/76561198088968807?time=1430463600 (1 in stock)
• bp on 5/2: http://backpack.tf/profiles/76561198088968807?time=1430550000 (none in stock)

http://www.tf2outpost.com/trade/25918395 (18 hours old)

Seller at 3 ref:

http://www.tf2outpost.com/trade/25914082 (1 day old)

Sold at 3.66 ref:

http://www.tf2outpost.com/trade/25811656

• bp on 4/30: http://backpack.tf/profiles/76561198103071005?time=1430377200 (23 in stock)
• bp on 5/1: http://backpack.tf/profiles/76561198103071005?time=1430463600 (23 in stock, sold 1, added 1 to bp)
• bp on 5/2: http://backpack.tf/profiles/76561198103071005?time=1430550000 (24 in stock, sold 1, added 2 to bp)
• bp on 5/4: http://backpack.tf/profiles/76561198103071005?time=1430722800 (22 in stock)
• bp on 5/6: http://backpack.tf/profiles/76561198103071005?time=1430895600 (22 in stock, sold 1, added 1 to bp)
• bp on 5/7: http://backpack.tf/profiles/76561198103071005?time=1430982000 (23 in stock, added 1 to bp)
• bp on 5/8: http://backpack.tf/profiles/76561198103071005?time=1431068400 (24 in stock, added 1 to bp)
• bp on 5/10: http://backpack.tf/profiles/76561198103071005?time=1431241200 (22 in stock, sold 2, added 1 to bp)

Sellers at 3.66 ref:

http://www.tf2outpost.com/trade/24787952 (1 in stock)

http://www.tf2outpost.com/trade/24518204 (2 in stock)

Sold at 4 ref:

http://www.tf2outpost.com/trade/14464787

• bp on 4/28: http://backpack.tf/profiles/76561197967159739?time=1430204400 (5 in stock)
• bp on 4/29: http://backpack.tf/profiles/76561197967159739?time=1430290800 (3 in stock)
• bp on 5/1; http://backpack.tf/profiles/76561197967159739?time=1430463600 (2 in stock)

Note: Even though 3 ref sells quickly, there are enough sellers that it should still be included in the range.