I'm taking a product I sell locally to a more regional level which means I will now have to deal with shipping. Who pays for the shipping when a store places an order with me?

I've always been able to deliver my product to local retailers who buy from me. Since I will now have to ship it out of state, I need to know how that is handled - does the buyer pay the shipping or do I have to cover it?
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You do. You can build it into your overall costs--but make sure it is part of your cost structure as you do your numbers or you will be looking at some heavy expenses you didn't account for or "expect"--which will kill profit on your bottom-line.