I suppose so. I've based 1250-1500 points of Blood Angels and still have half a pot left of Armageddon Dust so you get a lot of use out of it.
That Bastiladon looks awesome! Love the colors and the shell highlights. Regarding basing... Like @Aphotic says, the Citadel textured bases are pretty great and fast. My bases (only a few models so far) are done that way, almost identical: Armageddon Dust texture; Agrax Earthshade wash; Terminatus Stone drybrush, with Mordheim Turf grass tufts. Super fast, super easy. Definitely true, and you don't want to feel like you have to ration the texture paint (the more the better, per base), so in terms of cost-effectiveness, something to consider (depending on your time-money continuum, it might still be "cheaper" because of time saved).
Long time since i posted anything! Now that im giving seraphon all my attention i'll try to update this post more often! Here is my first Guard! More pic's will come! Not the best quality Camera..but hey..thats all I got