For cheap .com domains at GoDaddy
1) Sign up for free account at
FatWallet.com to receive 12% cash back at GoDaddy.
2) Search the FatWallet site for GoDaddy and then click the blue shop now button.
3) Choose the .com domains you want and on the order summary screen enter the promo code
cjcfat799
4) Using the cjcfat799 promo code should give you .com domains for $7.99 + $0.18 ICANN fee each. After you receive the 12% cash back from FatWallet you'll have paid $7.21 for each .com domain.