The same Arsenal Saiga conversion that was $900 not long ago is now going for a little over $500. That is better than you could do converting it yourself, especially if you are trying to do the front end work too.
I just got one of the Arsenals, and used to have a VEPR. Mag lockup in both was/is tight. Accuracy wise, the sights and Wolf are not helping your case, but I shot the VEPR noticeably better. Of course it has the much thicker barrel and receiver. My only dissappointment with the Arsenal so far (model SGL21) is the accuracy; with a warm rifle and about one round every 3-5 seconds off the bench, I was putting about 85% of the rounds in the black at 100yd. I shot Wolf FMJ and Brown Bear soft point; the Brown Bear did a little better. Like I said, it has been a while, but I did better with the VEPR overall. I sold the VEPR (which I regret) due to the weight and lack of furniture options. The Arsenal is a lot lighter, no question, and has a classic style receiver. I may be a little dissappointed with the accuracy, but overall, my opinion is that it is an AK, it is not likely to be shooting real tight groups anyway, and it does what I bought it for, for a great price, so I definitley don't regret the purchase and will be holding on to this one.
Do a search, the price drop of the SGL21 has caused quite a bit of discussion surrounding them recently. I bought one because of it.