E-commerce - product with different price for different roles

Hi there

we have three types of users

• Users with Role A
• Users With Role B
• Users With Role C

With these group of users in hand we want to provide each group with special price.

Say ProductA price for group of users with Role A is p1 dollar but for Users with Role B the price must be p1+e dollar and so on.

When a user with Role A sign in to our private store he must see price P1 for productA and another user with Role B must see p1+e as a product price.

i want to know is there any way to implement this scenario in kentico ecommerce?

Possible ways of implementation could be :

1. Customizing SkuInfoProvider
2. Create a price form control and select role and entering product price for that role also e must use option one.

any way i am looking for best practice