How to create a Platinum,Gold and Silver Customer and how to set different price for a single material based on customer?

Hi All,

How to create a Platinum,Gold and Silver Customer and how to set different price for a single material based on customer?

Assume Material is Pen.

While creating Sales Order in VA01 how to bring different price for the same material for Platinum,Gold and Silver Customers.

Kindly help me out.

Thanks,

Renjith Jose