First Suggestion, please be nice :)

Sellers at 1.33

http://www.tf2outpost.com/trade/25075056 (asking for current backpack.tf price)

http://www.tf2outpost.com/trade/25072130 (asking for current backpack.tf price)

http://www.tf2outpost.com/trade/24995493

Sellers at 1.66

http://www.tf2outpost.com/trade/24971701

http://www.tf2outpost.com/trade/25079993

http://www.tf2outpost.com/trade/25079270

http://www.tf2outpost.com/trade/24979337

Classifields

http://backpack.tf/classifieds/?item=Master%27s%20Yellow%20Belt&quality=6&tradable=1&craftable=1

(currently 1 for 1.33, 1 for 1.66, 1 for 1.77 and then rest are high but painted)

Selling at 3 ref????

http://www.tf2outpost.com/trade/24903900 (just saw this but i don't think it really means anything)

Buying at 1.33

http://www.tf2outpost.com/trade/24674723 (wasn't asking for yellow belt specifically but was only accepting hats he wanted)

I know there is only 1 buyer but that is because all the other traders were quickbuyers and even this person wasn't very specific. There aren't many trades for this item anyway so that is why the proof is pretty low. This is my first suggestion so please be nice and I am open to any criticism to get better. This is not to increase the value of my yellow belt but because when I went to buy this I realised all the trades at 1.66.