At the time Santro Prime was introduced in back 2007. there was minor different in CLUB and PRIME models,
1)- In Santro PRIME. black bumpers, Caste player, not matching side panels with door side panels.. General tyres
2)- In Santro club. matching bumper with body color, classonic mp3 cd player, Han kook tires, ETC
And yes there was a minor price different for not offering additional features in Prime models.