Some of it was reprinted in books showcasing specific repeat artists, such as The Complete Crumb from Fantagraphics (I think much of, or all of Crumb’s Weirdo art was reprinted in the latter volumes), and some of Kim Deitch’s books, and probably others.
I know some of the early issues of Weirdo had additional printings as well and can be found at better comics/comix stores or eBay, etc. The whole set is well worth collecting/reading.
