Axy,
The P250S is offered as a 2010 model in the US. It has carburetor, not fuel injection. It is an extension, a maturation of the P250 (vintage style) product with many shared parts between the P250, P250S,
It is a water-cooled bike, 249 cc engine, dual disc front brake, single disc rear brake, made in Taiwan by Kymco
Engine and CVT are shared with these bikes: Bet&Win 250 (Ego), GrandVista 250 (Grand Dink), Xciting 250.
The list price is $4,499 USD
The P200S is offered as a 2010 model in the US. It has carburetor, not fuel injection.
It is an air-cooled bike, 163 cc engine, single disc front brake, single DRUM rear brake, made in mainland China by contractor overseen by Kymco engineers
The list price is $3,399 USD
Huge differences in the bikes. The buyer will need to determine if the bike is worth more to them or not.