Plugin/Component needed

Hi,

I’m looking for a plugin/component that will help me service both sellers and buyers on a site.

Essentially we’ll be selling digital goods, users in some instances will be both sellers and buyers who would deposit money into their accounts and purchases will be deducted from their balances. Sales would add to their balances and those will be paid in full either weekly or monthly.

At least that’s the idea. Of course I tried a Membership Plugin but there’s no way that it would suffice for these needs.

Any advice appreciated. Willing to pay.

Thank you,

JM