manual burr grinders are the only 'cheap' good grinder, and require some muscle in the mornings which not everybody is down to do.
zassenhaus grinders are classic looking and work well, but have an infinite adjust instead of a notch adjust, so after cleaning its really difficult to get an identical grind to what you had before.
A Hario Skerton is a great entry level option, with some slight mod work you can have a perfect, repeatable grind for under 50$.
The cheapest electric grinder you should look at is the Maestro Plus, which goes for about 150.
from there its a jump up to the mazzer or compak, which will set you back between 5 and 700.