The best electric meat slicers available cost over $600 and are designed for repeated use in restaurants and businesses. Household electric meat slicers are reasonably priced, and well-reviewed models range from about $80 to $200.
Depending on the environment where it will be used, a restaurant quality electric slicer might be impractically large and expensive. Household models are more compact, have smaller blades and cannot slice longer pieces of meat as thin as a restaurant quality slicer. Well-reviewed electric carving knives are available for as little as $20, but will not slice meat as finely as an electric slicer.