Just like your question last week wanting good Chinese websites to get really cheap coral....it really doesn't generally work that easily.
The majority of wholesalers just are not that cheap for starters. Any legitimate one at a minimum is going to need your business license and tax/reseller ID that is filed in your state. Many are going to want some additional proof you are operating a legitimate business.
Not saying it can't be done its not really that hard to get a wholesale account some places, but it is entirely not worth it for your average hobbyist. Not going to name names but some of the bigger well known wholesalers are so pricey it is often more affordable to buy from a random person on these forums/Facebook/etc.
If you have a relationship with a LFS near you see if they are willing to give you a discount if you buy a full box. A couple of times now I have gave people great deals who wanted to order a bulk amount. If I got a confirmed buyer who has put money down enough for a minimum order then I am happy to give them a discount on normal retail prices, but they have to take delivery as it's unboxed it never touches my tanks and they take a lot more risk than when they buying standard retail....