Are you looking for a tournament set with T50 denoms? That may be hard to find. Or is a traditional breakdown acceptable?
You say no Tina, but are you open to other ceramics like ChipCo or BR Pro? He could build a T25 set for about $350 to $400 from BR Pro with lots of designs to choose from. Could even do semi-custom of denoms to get his preferred T50 chip.
I assume clay is acceptable, but sharp clays will be out of this price range. Are you open to worn clays?