Pyment-
Those microscopes are transmission scopes, used for cellular microscopy and such, and will not show the bevel of a razor. Also, good scopes at this magnification are very, very expensive- the optics in these are likely to be a little wonky. The advantage of the cheapie toy scopes is that they are all reflective, and therefore illuminate from above the objective.
You might look into good stereo dissection scopes, or other scopes that have the light source above the stage.