My client wants to sell several unique PDF files on their web site. I would like to email the unique file(s) to the buyer upon receipt of IPN notification from PayPal. I had considered making the file(s) available only to certain member groups (using the Download Lock module), but each file would need to be protected by a different group name and if a user were to purchase more than one file, they would need to be a member of more than one group - not possible in EE as I have read.
ANY suggestions on how to accomplish this would be greatly appreciated.
- troy