Brother Fax dalema

I currently own the Brother Personal Fax-190 fax machine. This thermal
fax has been great to me in the past, however I was interested in
upgrading. My problem is I can go up to 1 year without receiving a
fax. I got it mainly for sending faxes.

I was interested in getting the Brother 560 personal fax machine, but
had a question about the ink cartridge. As I mentioned before I can go
up to a year without receiving a fax. How long will the ink cartridge
in the 560 fax machine last without receiving faxes before it dries
up? Also if I order the replacement cartridge, how many pages can I
produce with this? For someone who does not receive a great amount of
faxes, will it be worth the money to get this new machine, or just
purchase a Brother copy machine?