Linh,
This sounds like more of a functional question than a technical one.
I'd be pretty confident in saying that C4C has the capabilities to do this. As i assume you've investigated the system standard methods to handle this (like price specifications), you're looking to go down the custom route.
I would think that a custom Business Object can capture the relationship between the Product and the different possible configurations. As for the Work Center, it'd be set up to manage the possible configurations.
I'd see this as at least two custom Business Objects and one or more Business Object extensions. One custom B.O. is used to set up the possible configurations. A second custom B.O. is used to associate a specific per-document and per-item configuration back to the standard SAP Business Object (like Sales Quote). The Business Object Extension controls the generation of the second Business Object and the determination of pricing on the standard business object.
You could then use an embedded component to make this visible and able to be configured on a per-item basis on the Sales Quote or Sales Order entry screens.
You can then add the logic in ABSL to calculate the price and override the standard price.