Hand registering domains for under $3 is a no brainer. Godaddy keeps lots of fresh coupon codes available and I’ll keep this thread updated with new coupon codes.
Many folks that register at Godaddy are also signed up for Discount Domain Club (DDC) where renewals for members are under $9. I prefer to transfer out to a more user friendly and secure NameBright.com for $8.03 (w preloaded funds) before having to renew at godaddy.
You’ll probably need a CC/Debit card and no promises these codes will work outside the US/Canada or at all they do expire eventually..