Yes, UltimateWB Full does have an e-commerce app that can work with member groups.  You can create membership fees for a member to be added to a group, and then restrict access to the webpages you choose based on member group.

Related User Manual Topics:

"How to Restrict Access to Members, or certain Members/Groups": https://www.ultimatewb.com/password-protect-members-restrict-access/how-to-set-page-access

"Item Payment Processing: Downloads Access/Add Member to Group": https://www.ultimatewb.com/e-commerce-app/item-payment-processing-downloads-access-groups

E-commerce App: https://www.ultimatewb.com/e-commerce-app