Because the sales were too far apart?
In any case, contact your buyer and tell him that you will be sending him a Paypal invoice for the combined purchases, with the combined and discounted shipping fee.
Remember the 'discounted' part, this makes the buyer feel the warm fuzzies.
You could also assure him that PP's Buyer Protection program is very strong and parallels that of eBay. True, and more warm fuzzies.
When you send the invoice, put the eBay transaction numbers and the titles into the invoice.
He pays, you ship.
Mark the eBay list manually for the payment and shipping. It's not automatic when you use this system.
