Thanks for the offer, I may take you up on it. Right now, I'm working on how to get the necessary code added to my webpage. I have considerable experience as a web applications developer, but haven't done any development of shopping cart-type stuff.
I've used PayPal tools on another site of mine for mail-order stuff, but I'm struggling when it comes to instant-fulfillment download purchases. PayPal tools can be used for this if you put a download link on the order confirmation page, but then there's nothing stopping an unscrupulous buyer from copying down the link to that page and sending it to all his friends or posting it online in one of those awful 'ebooks should all be free' sites.
I tried buying some page widget code that was supposed to generate a unique, one-time only URL for the confirmation page of each paid order, but I could never get it to work right. That was a couple of years back, tho...maybe there's a more elegant solution I'm unware of, because I know lots of people have this functionality on their pages. I just don't know how the heck they do it!
