Whats the best way to sell PDF's online, using DP6

Hi all,

Starting a website soon enough and im looking to sell downloadable PDF's as a means of income.

Now some have suggested to use a 3rd party ftp, so when the customer pays they are given a code to access the pdf....I dont really want to use this if possible.

I was hoping to use the ecwid provided by Xara, and I've proof read that you can use a 'Google Spreadsheet'? which will allow you to put a price on the digital product and sell it. Also means I can have a cart on my site which will look more professional. Plus I can use Paypal....

Anybody agree or has done something similar? some tips would be great help thanks !

p.s. Want to incorporate an RSS Feed so customers can be updated about new products available/ content from my site & some which my site will follow...How do I go about setting this up?

Cheers :)