Onesuite fax service is worth checking out.

Their incoming service is only $1/month without any limits on the amount you can receive and you can choose local number within your area.

The sending and receiving service is @ $2.95/month still with unlimited incoming fax and sending out is pay as you go @ 2.5c per page to US numbers and 1.9c to Candian numbers. Different rates for different countries but mostly 3c or below.