[addandsubtract]

There's also https://www.nearlyfreespeech.net/ which offers static site hosting for $0.01 per mb/month

[keenerd]

Spot on. These are the guys I use, they are great.

The transfer rate is $1/GB. If you don't have many pictures and serve pre-gzipped html/css/js (needs a custom .htaccess) the bill can be very low.