Is he already biking/have a decent bike? I would be cautious about dropping serious money on an ebike if he isn't already set up to ride a regular bike. The initial cost of lights, clothes, and other gear can wipe out the financial benefits of biking if you are not sure you will stick with it, not to mention the cost of the ebike.
On the positive side of the coin, I had no previous experience working on bikes, but am reasonably handy and I added a mid drive kit to an existing bike for much less cost than a new ebike. Ebiking has been great because I can get to work faster and less sweaty than with a regular bike. Check out some of the other ebike threads and really analyze what type of commute/biking he will be doing. The motor type, battery size, and bike that you buy are all factors in making the right decision. Good luck.