I guess you must move this topic into
digital goods section as you are dealing digital things instead of any services related to post here.
-snip-
Not sure if even this is the right section, since GoldMoney is very much a payment processor and you are sending the gold grams "with clear USD value" in there to someone else for BTC.
Also seen topics -plenty if you use search- regarding GM in Currency Exchange sub-forum
Should be easy to get a sale for that amount since it's not a big chunk on a one-buyer deal. Best of luck.