PSL mags are pricey and hard to find in good shape. But I lOVE mine
They are more accurate and can shoot heavy ball unlike the PSL
We have people on the AKfourm working on converting them to SVD mags
There are a couple retailers selling PSL mags for $45, could be a lot worse - how many does a person need when you can only shoot the gun accurately at 3 rounds in 5 minutes? Sounds like 2 is all a sane person would need.
Real Dragunov SVD mags are selling for $65, there's a pile of them on GB. A solid parade of PSL mags on eBay from $45-$75 ... no shortage of either that I can see; for the past couple months there has been at least 2 for sale on eBay at decent prices all the time (disregarding the perpetual re-listed $70 - $100 GB auctions).
I just sold my last tuned up PSL mag for $75 on eBay. I'll probably sell my PSL at a slight loss if Jerry Hunt (http://blackhorsearsenal.gostorego.com/) comes thru with his US made bull barrel SVD next spring.