Wait for both the refund and the item to arrive.
If they do , message the seller the item has arrived. Then, you'll need to repay the seller which may be done by cheque, bank transfer, or if you have a PayPal account , a PayPal Friends and Family payment.
If PayPal is used, email addresses need to be exchanged, this can sometimes be found with the order details >> Show Contact Info. If not and you need to ask the seller for this, make it very, very clear in your eBay messages, as eBay do read these, the reason for these exchanges. Make it clear it's not to be used for an off eBay sale.
If you do not require the item anymore, message the seller if they wish for the item to be sent back to them, to send you the money to cover a tracked return postage. This can be done by the same methods as above.
@basthedad
