You can pay to send faxes through a Subscription or through Credit Packs.
Subscriptions allow you to send unlimited faxes for a set period of time.
Send unlimited faxes for 1 week - $7.99
Send unlimited faxes for 1 month - $17.99
Send unlimited faxes for 1 year - $47.99
Credit Packs are priced per page and have larger discounts the more pages you buy.
1 page - $0.99
10 pages - $6.99 ($0.70 per page)
30 pages - $17.99 ($0.60 per page)
100 pages - $49.99 ($0.50 per page)