Depending on what he wants to spend; I got the whole CH setup at a rough cost of $350, pro pedals, Fighterstick, and Throttle.
The recommendation came from a guy in our squad that has been doing online SIMs for many years and from going to Oshkosh EAA and seeing CH as the premier flight sim Eq provider. Definitely worth the money. Haven't had them long but hear they last forever...
Good luck deciding..
Fireof59