Need 2 custom requests

Hi,
1 st request:
I need to hide the pricing for each and every component. I do not want the customer to know ho much he/she is paying each product wise.

2nd request :
I want the pricing amongst various products shown on a certain step to be dynamic.

For example if someone opt for Intel i3 processor then the price mentioned next to Intel i5 processor should be the difference between the 2 processors.

Please let me the cost.

thanks