I also would like to know how much it costs.
Updox website says it only costs $5 a month.
Does it include receiving unlimited faxes in pdf format to a tall free number?
I have been using GotVMail as my answering service and to receive faxes.
The GotVMail answering service alone costs only $10 a month plus 7c per minute for incoming calls.
Receiving incoming faxes as pdf or png files to my mailbox costs additional $15 a month plus 7c per minutes for faxes received.
For now I only receive CT/xray reports to this virtual fax and keep it as my fax backup in case if something is wrong with my office fax machine. It doesn't send faxes out, so I use Brother network fax. If Updox allows to receive an unlimited number of faxes for only $5 a month, it's worth it.