I picked up a Rock Pro kit a few years ago as a gigging kit that I could leave around town. (Ironically, given the name, I use it as a jazz kit - sizes are 10", 14", and 20" ... I never use the 12".)
I don't know what the shells are made of (and don't particularly care ...lol ... ears only for me!).
The good:
1) 10" tom absolutely sings.
2) 20" bass can do anything - sing for jazz, or tune it lower and it thumps for fusion/rock. Very good.
3) Stands, pedal, HH stand, etc. are more than acceptable.
4) The wrap looks good and has held up perfectly thus far.
The bad:
1) The 14" FT can sound good, but requires continuous attention to be tuned properly. I suspect this particular drum may have issues.
2) Snare is barely acceptable IMHO.
3) Floor tom leg holders strip out. This is the biggest issue I have. Even after I knew of the dubious metal quality and was careful, I stripped out holders. All three have been replaced at some point. I've recently ordered some Gibraltar replacements ... stay tuned...
My verdict: A respectable kit that sounds better than the price often indicates (I got mine for $300!). If you could pick up a good deal on a snare, you will be in business and should have a good sounding kit!
Hope it helps!
radman