Enom comes to mind. Better prices if you get a reseller account. Only catch is you have to load it with funds.
https://www.enom.com/resellers/newreselleraccount.asp
If you want a reseller account I can set you up under my main account so it won't cost you anything to get started except the first $100 load.
If you're interested email me and I can get one setup for you. themailman AT statsjunky.com