I wonder what eFax charges to port a number; the link on that page is 404’rd presently.
I use eFax, but have a toll-free number that I own directed to my eFax number. The toll-free number is the only one I give out, and that’s really cut back on the junk faxes. I see eFax charges $0.20 per page if you use their toll-free number provided by them, ouch!