Cost was low. Used a NODAK receiver which was $75. Barrel was a little over $100. Kit was only $150. Counting bits and pieces, I have about $400 in it. Mags will be at least $25 each, but I won't need more than a half dozen.
Is it as good as an AR? Not in my opinion. The AR as we all well know is the the Lego of killing machines. Get a good receiver and a good parts kit and you would have to work very hard to make a bad AR.
Build an AK, other than sticking a parts kit on a receiver which is work in itself, and go wildcat by trying some mods? Pain in my old ass.
Glad I did it. I've built a dozen AKs over the years. This one is my last. It was real. It was fun. And at times it was real fun.
But after putting together better than a dozen ARs, why would anyone want to go any other direction?
I'll keep my AKs: Bulgarian side-folding stock in 5.45; an ass ugly Egyptian parts kit build in 7.62x39, and now this bastardized Bulgarian in 5.56. I guess I need to count my Romanian-built PSL54 in that it is AKroid spitting forth 7.62R.
But for fun, none of them can compare with my 9mm NFA carbine, my 300 Blackout pistol, a couple of nondescript M4geries, and my early full-length, no forward assist, no deflector, three-prong lovely with triangle HGs and the black stock w/o the storage compartment.
Building guns is fun. As we know from Brother Old Painless, shooting guns is even more fun. But there is a certain deep pleasure from owning many guns that shoot many things and many different ways.