I don't think they would bother with people who grow for personal use. They do not regulate growing Tobacco for personal use but, who ever does that?
Same thing with making wine and beer. People make small amounts in garages and basements but it's not a prolific activity that the Govt. concerns
itself with. It would be a different story if you produced in large quantities and got into marketing.
As for the price comparison WOW!!!!! I didn't realize it had gotten so expensive out west!

Last I heard around here it was about half of that

.
Really doesn't matter though. People are paying those prices now and I see no reason to make it dirt cheap (another deterrent to kids). Imagine that
$100 pack of joints costing somewhere in the range of $1 to produce and $99 going to social programs that really need the money.
Assuming that we
can keep the DOD and the other corrupt hands out of the cookie jar.
Theoretically, it could be a huge revenue source with some great side effects. No more street dealers. Better drug education and rehab services.
DRASTIC decrease of non-violent prison inmates (see Tommy Chong A.K.A. Scapegoat).