internet.bs is one of the cheapest around. It's cheaper than V_Rocks reseller who requires deposits of thousands of dollars to get their best pricing which is still more expensive than internet.bs.
I have a link off my website that has $7.49 godaddy domains, no coupon required but you do have to use the special link.
I also post coupons and specials on the WebmasterCoupon
facebook page
Prices go up in January BTW so register/renew your domains now.