Currently gold is selling for around $5 per 50M however when you go to sell gold it automatically inputs $0.25 and I have heard a couple horror stories already where people have accidentally posted their gold and had it sell instantly with no cancellation period at a rate of 0.25$ per 50M this is a bug that should be fixed asap because in the past gold automatically updated to current market price when you tried to sell it.
RMAH gold danger