I'm a little confused...why wouldn't you just keep that yourself?
Running an eCommerce site takes A)time B)money or both.
1)Like you mentioned yourself, most wholesalers require minimums in addition you generally have to have a biz license before any legit wholesaler will even deal with you, finally you have to host, register domains, get the products up on the site etc..
and that is JUST to get a site up and live in order to sell, believe me when you are dealing with thousands of products it is a very time consuming task.
2)Next comes the SEO, since this is an SEO site I am going to assume most of the people reading the thread will understand what that takes
3)Finally you have to consider the customer service aspect which is order fulfillment, shipping, service, returns, replying to phone calls, emails etc...
What I am proposing is they skip #1 and #3 and focus on promotion and for their effort I handle the rest and they get half the profit.
Why I dont do it myself is because of Time/Money, I work a real job and dont have hours everyday for SEO and I dont have much to continue to spend on advo. This way others who have time to market and/or already create traffic from blogs or other methods can make some $$$ without spending much or any... win/win Sounds like a decent deal to me.