For now, the best renewal code for .com names at GoDaddy is Zine10 for $7.49 / year.
Update: Just found a great renewal coupon code of GoDaddy for .com renewal at just $6.99. Simply use the code DNF5. However, a minimum of 5 domains is required to get the maximum discount.
Searched all day yesterday for a $6.99 .com renewal coupon to use for my 30 or so .com domains at Godaddy.
Until I found something at this thread at namepros. But it’s just $7.39 (not including the ICANN fee) each for .com renewals with this code:
The deal is not bad if not the best. I’m still keeping an eye on any working $6.99 .com renewal codes, if any one of you happens to have one, please kindly share it in the comments. Thanks!