I want user to be able to sell there own products

Here my problem I am trying to setup this site for user to be able to signup and sell there own products. I have setup multisite and I am using marketpress and I using easy blogger plugin membership plugin pro site plugin http://www.captainebooks.com this the site link. When i use the membership register they user it doesnt give the option to setup there own site. When I use built in register it easy blogger easy mode is not working. I got to get this working together somehow and need some help please any ideals and I can provide logins if requested.