Thrones are currently selling for $40 USD on PlayerAuction,
I am looking to purchase Thrones with FG equivalent to $40 USD which is: 1260 FG each.

You can check the D2JSP "Forum Gold FAQ" at the top right of your browser to confirm that $40 is actually equivalent to 1260 FG.
You can also verify the prices of Thrones, GB etc. on PlayerAuction.

PM me if you have any questions or concerns.

40usd is closer to 4k

Okay, purchase $40 worth of FG from d2jsp and tell me how much that gets you.
It's clearly shown on the "Forum Gold FAQ" what the prices are and how much you will receive.

people dont use that for usd:fg ratios. in the donor forum people sell real life items for Fg and the ratio is usually $10:1k fg so $40 would be 4k fg.

you must be new here, thats not even close to the ratio LMFAO.