About $2200. (grin)
Seriously, the PSL was designed and manufactured in Romania to be a designated marksman rifle, not a sniper rifle. It's a beefed up AK-47 with a more powerful cartridge. It's intended for combat out to about 500 meters or so. It's about $800 on the open market. Here's mine:
The Dragunov, while similar in appearance, is Russian made, uses a different action and was designed from the ground up to be used at longer distances like a sniper rifle. I think they sell for a few thousand dollars. Here's a typical one:
(Image from dragunov.net
Some companies that imported PSLs into the US called them "FPK Dragunovs," although they're really not Dragunovs. They just look similar.
The way I tell them apart:
1) There's a large gap (about an inch) between the front of the Dragunov's trigger guard and the rear of the magazine, while on the PSL there is no gap.
2) The PSL magazine has a big "X" embossed on the sides. The Dragunov mags look like waffles.
3) The Dragunov's safety lever has a dogleg bend in it, but the PSL's lever is straight like an AK's.
4) The Dragunov generally uses a Russian PSO-1 scope, while the PSL uses the Romanian LPS scope which doesn't have an electric reticle illuminator. (I.e. no wires.) Some people mount different scopes though, so it's not always obvious.
They both shoot the 7.62x54R cartridge.
Lots of good info on both are at dragunov.net.