It depends on what your needs are.
If you're looking for an ISA based Sound Blaster Pro II compatible sound card (under DOS), with true OPL3 synthesis and a Wave Blaster connector (without the MIDI hanging note bug), then this is a good buy.
It does offer full 16-bit recording and playback capability under Windows and, like the Sound Blaster 16 and other clones of that era, also has a game port and UART mode MPU-401 MIDI interface.

Aztech Labs was most famous for their Sound Galaxy range of this sound cards and I believe that this particular model was sold as part of a multimedia kit.
If it has the FCC ID of I38-MMSN850, then it's the one that utilises the AZT2316 A/R chipset, which is part of the 3rd generation of sound cards that Aztech Labs sold.
It's still a non Plug 'n Play sound card, but I've never had problems installing this under Windows 95.

If the card is the one that I described above and you do decide to buy it, let me know since I have the drivers for this particular model.

For a very low price, I'd say it is. Aztech made decent cards. I believe they also support WSS audio in DOS when the software supports it.