I got my Saiga from classicarms.us (before they went out of stock)
most of my parts I got from tapco. (stock, SAW pg, G2 Trigger group, PG nut and screw, etc)
most people say the k-var stocks are better.
bullet guide from dinzagarms.com
all in all, plus a 30 rd mag, something like $130 or $160 after shipping.