Hi. I just have a question about adding a download product. I have an e-book that I plan to sell on ebay and I will add this product as a download, but what I'm wondering is, does it make a difference how many I'm selling? I plan on using the "buy it now feature" on ebay and listing the quantity as more than one in the same listing (under the same title). Will the download link still be there or do I need to re-enter the download link after each purchase is made?