You would have said it like below, may be
Buyer wants game worth ₹850/-
You find an item which will be worth ₹1000/-
You gift it and buyer sells it for ₹1000/-
Steam gets its 15% cut and give ₹850/- in buyers wallet.
Now buyer can buy the ₹850 wala game
Is this transaction correct for your statement above?
also is the item to be sold in cs:go market guaranteed to be sold immediately? has delay in sale will result in missing a deal or something else. I have never traded items so a genuine question from my side.
also when do we have to pay you the amount? before item transfer? after item transfer? after sale of item transfer? you can clarify that here and it will be helpful for all