When exporting products to eBay, the product_price_gross does not take the discount at all, so if there is an item on the website discounted from €100 to €79 for example, the ebay integration is still putting it as €100 and there is no way to adjust it.
The simplest would be to add a field to the current options, so the formula would look like:
Dec 31, 2013
Thanks for comment Karol.
I'll discuss your comment with our development team after New Year.
Happy New Year!