If you are selling reports, publications or ebooks as digital downloadable files then you will need a download fulfillment company that can host your PDF (or other files), process your customers’ orders, collect payment, send the download link to your customers, and then pay you your royalty for your sales.

Here are some companies that can do this for you:

Payloadz No fee for up to $50 in sales, then $15/month,  plus 4.9% plus 49 cents per transaction. Affiliate management structure also available.

BitBuffet

Cerizmo

Clickbank

Sell Downloads Easy

TradeBit