If an middleman from this group asks for a fee higher than 2%, do not accept and report them immediately to us. How do you get the 2% price you say?

Converting percentage to a decimal:
2% = 2 / 100 = 0.02

What is 2% of 40
= 2% * 40
= 0.02 * 40
= 0.8

First get the percentage which is 2% now divide the percentage (2%) by 100 and you will get 0.02 then multiply it by the price of the skin/item (40$) = 0.8 (80 cents)

If you traded, say an AK-47 Vulcan worth 40$, 2% of that would be 0.8 (80 cents) and since it is below 1$, you do not need to pay. If your middleman continues to insist, take screenshots and report them to us.