Go Daddy has reseller accounts through wildwestdomains. What is whmcs or awbs? I did a search through google for those, but how could you use this to become a registrar? Without using a reseller, you would have to pay a large amount of money to become a registrar (not sure how much), and you would have to handle support as well as all the billing you mentioned above.
I would rather lose some flexibility and some profit rather than handle things like support, fraud, etc, myself.
If you buy a pro-reseller through Go Daddy, it will cost you around $200 a year. If you buy from me, exact same thing, it will cost around $135 with coupon code: RS25OFFPRO. Check it out here...
$200 a year! or $135 with discount...
Why pay anything... here are plenty of Registrar / Reseller companies out there offering them for nothing.
I mean Inno hosting, $6.95 for a .com from recollection....
Or simply go direct to a registrar!
Unless I missunderstood your website, you do have a $0 reseller program, but your buy rate for a .com is $8.95. Buy rates for Go Daddy or doory reseller is around $7.40, something like your Tier 5 which requires a $5,000 deposit.
What does it cost for your API program? I am thinking about moving more to an API approach since some of the reseller websites are not made for a non-tech person!