Your payments WILL catch up (especially if you don't use Ebay labels!!) eventually, but basically you have to wait for a break in sales (and therefore seller expenses). Atm I have a positive balance because I sold a load of stuff but haven't made any sales for a few weeks.
Basically they're using your unpaid monies to fund your postage costs (if you use Ebay labels). This can be especially galling if you use untracked mail services, and then your buyers do not mark their items as received. It will take at least two weeks for your payout-- and that's if you haven't already spent the money on postage labels for your most recent sales.
