Looking for a membership level plugin

Hello everyone. I don’t know if WordPress has the kind of plugin I’m looking for. First, I would like to have a shopping cart plugin. I think eShop will work. Once I have a store set up, I would like to make members into a couple different groups… like membership levels.

Example:
normal members (group 1) see the price $5.00
VIP members (group 2) see the price $3.00

Is there any plugin can do this or is there any trick that can be done?

If i’m not clear, let me know.