If you want a good kit for a beginner which will carry him through, the Pearl Export kist starts at around �380.
They are the 'work horse' of drum kits - well made, will last well if looked after, and they sound great.
Should be ideal for what you want.
That said, any drumer will have his own personal preference, based purely on what 'feels' right, and there is no substitute for trying before you buy.
I'd be inclined to take your cousin along to a reputable dealer in your area who can show him some kits, talk through what he likes, and - most importantly - show him how to assemble and break down his kit for himself.