From a quick google, I think these are actual FED-5s that are refurbished and redecorated by Red Army Camera.
The pros and cons of FEDs are reasonably well known, but it seems like the premium you pay for the Red Army versions is kind of extreme (they list them online for $200 and up; even if that's in S$, it's still high compared to the "usual suspects" like Fedka.
That said, certainly not a "toy" camera by any standard; these are perfectly reasonable rangefinders, albeit lower-tech and with spottier quality control than we're used to in modern cameras. Many of the Soviet lenses are decent, and they will of course mount the whole population of M39 lenses. (Opinions vary on whether there are slight differences in the focusing between Leicas and fSU cameras---reputable people have done experiments and drawn mixed conclusions, so it's probably safest to assume that focussing with non-Soviet lenses may be imperfect.)
I'd look to one of the reputable Soviet-camera dealers instead, I think.
-NT