You can re-ink a ribbon if you're adventurous, or you can find new ribbons for many popular typewriters.

No harder than finding ink for a stamp.

(I saw this in another HN thread)

https://www.ribbonsunlimited.com/default.asp

There, solved it for you ;) They make the stuff

not too bad. I find a lot in local garage sales and on ebay. hasn't become a problem _yet_