Send2Fax lets you save paper, save money, and save time. They offer two plans: Send2Fax Home Office and Send2Fax Small Business for $8.95 and $12.95 respectively. Both plans let you send fax to email, email to fax, and web to fax. The Home Office plan comes with 150 local inbound/outbound pages and the Small Business plan comes with 350 local inbound/outbound pages. Any local overage faxes are $0.12 per page. International online faxes have a separate pricing scheme.
Send2Fax offers great value when it comes to internet fax applications. Avail of their 30 day free trial to see if their service is right for you.