The Staff is currently doing maintenance on the Market so all sales/purchases are paused. A message was posted on the market but you may not have seen this if just trying to post a sale.
The market will be back up soon for normal use. On behalf of the Moderators, Admins & Staff thanks for your patience & understanding as we work to keep UR a great community.
Suspending the market during an upcoming Friday character release will be bad. Very bad.
I can't see them releasing any new cards until they can sort out what ever the problem with the market is