Forum Moderators: buckworks
If I would to use paypal it would only be for a secoundary provider but I use Google Checkout as my secondary and like it much much more.
If you have a merchant account then you have pretty much paid most of the expense. Credit card processing centers will have a small set up fee for you but I would make sure your cart is able to use the processor you select.
Best place to start is at the cart find out the companies the cart can use and call. Most charge from 50-200 bucks set up fee.
PayPal's concern would be booking that amount of business, only to see a company disappear with the cash, and all the customers demanding their money back.
You may want to call them directly with that question. They could tell you the limits.
If you are in the United States, anything over $30,000 a month will require financial since you are wanting to pretty much borrow $600,000 (if you are wanting to do $100,000 a month).
More information on this post about what the provider looks for etc: [webmasterworld.com...]
-Corey