yes it is 14 disc for GRGR! I got my DVD copy already and I'm enjoying every moment of saichon/Charles and nangfah/fahlada!GRGR was 21 episodes too -- so far, RP anf GRGR are the longest episode lakorns that I've seen while airing but probably when the DVD set goes out for sale, it will be shorten 13-14 episodes. I think.
and as for RP there should be only 11 to 12 DVD disc because remember how they shorten like one of the episode to like 3 parts only. I got disc 1 to 7 already! So if there's only 6 episode left then it should be around 11/12 disc!