Hey, you are maybe right, but you need to show us by showing us proof. Proof are links from:

1. tf2outpost.com

2. backpack.tf classifields

tf2outpost is always used as main proof, so go ahead to there, search for this item, and show us sellers for your price. So for example:

Item on backpack.tf cost 4 ref. You find someone selling it for 3.66. Copy the link and put it here, and you can format it like this:

Changing price from 4 refined metals to 3.66 refined metals.

Sellers:

3.66 ref http://www.tf2outpost.com/trade/26842985

3.66 ref http://www.tf2outpost.com/trade/26842985

3.88 ref http://www.tf2outpost.com/trade/26842985

then if you can, you can find some people selling for original price (in this case 4 refined) and show us, that 4 refined doesnt sell well. Thats called unsolds.

For example you find someone selling it for 4 refined, and the trade is old 1 month. So you can add it as unsold, and show us, that the price really need to change.

Unsolds:

4 ref http://www.tf2outpost.com/trade/26842985 1 month old

4 ref http://www.tf2outpost.com/trade/26842985 2 weeks old

Classifields:

1. Screenshot them to make them valid (You can screenshot by Prntscrn (then uploading on imgur), use Gyazo or Lightshot, you can use google if yo udont know hwtas going on)

2. Tell what sellers are here

So it will be like:

Classifileds

http://prntscr.com/8bgv85

3x 3.66

2x 3.77

1x 3.88

And final suggestion is ready, you can post it:

Sellers:

3.66 ref http://www.tf2outpost.com/trade/26842985

3.66 ref http://www.tf2outpost.com/trade/26842985

3.88 ref http://www.tf2outpost.com/trade/26842985

Unsolds:

4 ref http://www.tf2outpost.com/trade/26842985 1 month old

4 ref http://www.tf2outpost.com/trade/26842985 2 weeks old

Classifileds

http://prntscr.com/8bgv85

3x 3.66

2x 3.77

1x 3.88

This is some basic data. If you want to not make any mistakes, ill suggest you to read this:

Guides out there.

http://backpack.tf/rules

http://backpack.tf/help/suggestions

http://forums.backpack.tf/index.php?/topic/36705-guide-for-non-unusual-suggestions/

If you have any questions about suggesting prices, feel free to ask any experienced suggester, they will answer you and help you with your suggestion. :)