Customer Specific pricing 2.6/2.65 (not pricing by customer role) support ??

Hi All,

Do we have a plugin or can someone point me in the right direction for implementing Customer Specific Pricing for version 2.6/2.65.

Example:

Cust Product Price
C1      P1      10.00
C1      P2       25.00
C2      P1       8.5
C2      P2       20.00


I cannot use Tier Pricing as

1. we have many customers, doesn't make much sense creating role for each customer.
2. its not quantity based , and I don't want it to be displayed on the product page.

I cannot use Discounting as it should be applied implicitly when the customer is logged in. It should not be shown as a discount.

Any help much appreciated.

Cheers,
Hari.