Don't know where your nephew is located, but you might consider reaching out to AAW (American Assn. of Woodturners) chapter or IAP (International Assn. of Penturners) that are closest to where he lives. Often can find members with lathes available for sale, especially smaller lathes--so you may find a machine local to him that is well-loved. Even if the nearest club(s) are an hour or more away, there may be members that live fairly close. Side benefit is that it may also get him pipelined into one of those organizations and the hand-on workshops or mentorships that are available nearby. If that topic came up in our club (90 minute drive for me), i'd be one of at least 5 members who'd offer a midi for reasonable cost.
Good luck!!