Brian A,
Go to US Kids website, click products, click ultralight, click shop ultralight, click height on left-hand side of page, then look at your options.
Do not need a full set (wood, putter, and 2 - 4 irons). Learn what you can, then go to ebay, facebook marketplace, etc and get a set.
If the kid loves it, then you can buy new later. If you take care of them they are very easy to sell on those sites above so you can use
that money toward the new ones.
Good Luck and thanks for helping your friend out!
Todd from TN