Role purchases downloadable files

Hi All,
I am newbie in the drupal and e-commerce module, but i found it really great.
I am currently making a report-selling website.
Could I set up 2 types of customers:
one is the general customers. they purchase file products one by one.
another one is the membership customers, who pay monthly, and gain access to all file products automatically without the processes clicking "add to cart" and pay for each product, e.g. show downloadable links of file products in "My Files".

Is there a way to do that in e-commerce module?

Many thanks,
Mark