Oh yeah. The NEC Versas are not very popular stateside, and I don't think it's that big in Europe either (at least when compared with Fujitsu/Siemens, Dells, HPs, IBMs or Toshiba) - hence it won't show up on evilBay often. Even if it does, NEC is not nearly as nice as IBM or Dell in being clear and concise with the specs, so your typical search for an "NEC Versa" can end up pointing to a myriad of different things.
The choice of a SiS chipset is a bit...unusual (probably because Intel charges a Prince's ransom for the Tualatin compatible 830 chipset, and vendors didn't want to over-invest in an alternative mobile platform when the P4m was around the corner. That being said, the P4m turned out to be a real dog). The SiS 305 GPU isn't all that weak (it's roughly equal to a Riva TNT and doesn't have much graphical glitches), it's really too bad that they were released late and against competition that moved much faster than them (oh, you bought a cheaper TNT? We already got a Geforce2 Go 200...and etc).
The audio chip on your machine (SiS 7018) has a DOS driver which is "okay" for general midi. It's a pretty decent machine for all intents and purposes otherwise. I wonder if it's a native NEC design, or NEC bought/rebadged a Taiwanese ODM design?