[dacort]

I found their documentation absolutely horrendous. Try googling for "recurring paypal" and you get a page that links to a (stated) 682K PDF published in 2006 that in actuality is only 2 pages and includes a link to yet another 300 page PDF.

[skennedy]

Documentation that overwhelms a new developer does not make a product less in functionality or quality. Googling code examples, explanations, and blogs of PayPal recurring payment code/functionality, I found a lot of very useful information during my own development. The functionality and product have been around a while and lots of people who want to help others adopt it.