Microscopy is not only an educational hobby, but also one which allows you to relax and to focus. It is rewarding, as you can discover and admire the beauty of nature.
Many low cost microscopes are manufactured in China, but also some microscopes from well-known companies are manufactured there.
The needed accessories depend much on the individual interests.
Prices range from about $50 for a toy microscope to about a minimum of US$ 250-300 (EUR 200) for a low cost educational compound microscope.
Some companies manufacture zoomable stereo microscopes. Here is my view on them.
This is a philosophical question and the opinions diverge on this question.
There are two types of light microscopes, the compound microscopes and the stereo microscopes.
In compound microscopes, a mechanical stage allows you to move the specimen slide by turning two knobs, which are located to the side of the stage.
The job of the eyepieces is to magnify the image that the objective produces.
The costs of using a microscope, once you own one, are very small. The microscope itself is in many cases the largest single expense.