Gaia decided to release 'gold generators' every week. These are cash shop items which grant gold for cash. (
Billions of gold.)
Because there is now a huge amount of gold available, every week, people have adjusted their prices accordingly. Earning gold without being clever in the marketplace is difficult now.
I think you should hold on to your items, as it would be difficult to purchase these items later in the future. (Prices will continue to inflate as more people decide to pump more gold into the system...)
Good luck.
whee