I'm interested in purchasing this microscope. I know it's low priced for a binocular compound microscope, and I am wondering, Is it worth it? I want it as a hobby and to replace my aging monocular MS with an oil-immersion lens.

I want to do general biological work with it. and I want to know if there is is a dark field condenser that could be used with it. I would like to observe live bacteria. Is this just a cheap toy-like microscope or is it solid and rugged? Could I used "Society-sized" objectives and eye pieces with it?
Thanks,
Paul