Back to the OP's question.
What are you looking for? Are you looking to buy based on price alone or do you want a nice looking and good functioning gun. Do you want an underfolder, sidefolder, collapsible, or standard stock, standard barrel or krink style? Do you like Romania, Bulgaria, Poland, Russian?
A Century Romanian is a good inexpensive gun but ugly.
A Century built Yugo is a good moderately priced gun, nice looking with wood stocks.
A Vector is a good looking, more expensive, accurate, really nice.
An Arsenal is probably the top of the line for standard AKs, you can get a milled one (pricey) or stamped.
Colorado Shooting Sports in Greeley, Krebs, Henderson Defense, and others will build you one.
There are 2 shops that I know of that carry a selection of AKs, Jensen's in Loveland or 5280 in Arvada. I haven't been to the stores in the Springs.