[Nottingham] Document Delivery Software

[Richard Bagshaw]

Afternoon,

Does anyone know of a decent document delivery solution?, a client of  
mine wants to offer a bunch of PDFs for download and payment to be  
handled through Worldpay and/or Paypal.  I could code something in  
perl, php or rails but was curious to know if there was something out  
there already that handled the cart facility, payment gateways etc

Cheers,

Richard