Softgoods payload delivery app using PayPal?

Has anyone written an e-commerce application that enables customers to pay using PayPal, and then automatically e-mails a file (text, photo, MP3, etc.) to the customer? I want to use PayPal because it has zero transaction fees. Wells Fargo charges me up to 12% for small credit card transactions. PayPal eliminates the need for a secure website. All credit card processing is done on PayPal's website. PayPal sends an e-mail to the seller saying, "joe123@aol.com has paid you $3 and attached this note: 'I want gilliananderson.jpg.'" All I have to do is write a PHP app that parses the e-mail into "joe123@aol.com, $1, gilliananderson.jpg" and then sends out the photo to that address. A zillion people would sell softgoods on their websites if there was a simple, cheap e-commerce application. By transferring functions to PayPal, the e-commerce app becomes small and simple. Comments? Anyone want to develop it with me? Or am I re-inventing a wheel? -- Thomas David Kehoe Casa Futura Technologies http://www.FriendshipCenter.com Stuttering Science & Therapy Website The free penpals database for http://www.fluencydevices.com individuals with disabilities. (888) FLU-ENCY