Electric razor for teenage boy?

[justcarol67]

Oops! Lost my first attempt at this post. I need advice from very
young men or parents of teenage boys. What's the best (inexpensive)
electric razor for a teenage boy who's never shaved before? The boy in
question is only thirteen, but because his hair is dark, his little
mustache is actually black and very noticeable. The mustache hair is
fine and I'd hate to have it turn to stubble, and I really don't want
him to hurt himself, either. It's sad because in many way he's only a
little kid with a deepening voice, big feet, and a mustache. Any
suggestions?

Carol, who has never been a boy and doesn't know how to help him