Wow, thanks Haukur! I was only aware of a few of these. There isn't
even an edition of Grágás at Saganet. I can't add to the list at
Google Books, but here's an old edition of Hrana saga hrings in pdf
format:

Sagan af Hrana hring, gefin út af Þorleifi Jónssyni
http://www.irlenbusch.de/ta_det/altnordisch/facsimile/hrani_hringr-thorir_hastr.pdf