Name cheap's *.com domain, sold for 10$ which is really more expensive than go daddy (4$)
That's usually just a NEW Godaddy Account promo price for 1 Domain name or with the purchase of another godaddy product, $4 is not the normal pricing for their .com domains.
I didn't know you were only looking for a .com, I thought you were just looking for a cheap domain name in general which is why I mentioned the Crazy 88 sale namecheap was having. You can actually get some nice domain names from them for $0.88 usd and use bitcoin to do it. Just a suggestion :-) Good luck with your search though!
Namecheap also comes with free privacy guard as well for the first year of registration. Just FYI!