re-stocking fee from refund

Hello there Can anyone help me regarding applying a re-stocking fee to a refund (i.e. reducing the refund amount by the stated re-stock fee) eBay advise this can not be done through the new `returns' system.

i dont know why they say `remorse refund will be less original postage and less any nominated re-stocking fee' if it isn't capable of processing this through the system.

Could anyone advise what they have done? Have you found a simple way to action a refund minus re-stock?

Thanks very much!

Jude

PS this is only for change of mind returns - when the item is correct and what was ordered.