Wholesalers generally only sell to businesses, not private individuals. Get a business license and register for sales tax in your state and then you have a chance.
Be aware that businesses do not have it easy when it comes to ordering fish. They order a lot, and a lot die. They usually have to go through a few orders with each of a few wholesalers before they find one with 'acceptable losses' that they feel they can work well with. They also have many tanks (more like large, well-established systems) to put this sudden increase in bioload into. In order to meet their minimum order you would probably have to finish stocking your tank all at once. You also get no option of seeing the fish you want to buy before actually getting them. This means you could end up with under-sized, thin, inappetent, and sickly fish.
I suggest you simply put in special orders to your local shops, probably with a deposit.