question about attribute tax

[coco_jambo]

Hi

I'd like to ask can i somehow change attributes taxing? Let me explain.

Suppose i want to sell a pc monitor and have 2 attributes in it with following attributes and features:

 

Base price 200$

 

Screen type:

LCD - 0$

LED- 50$

 

Monitor wall mount:

none - 0$

medium - 5$

large - 10$

 

And now i do not want the screen type to be taxed, just monitor wall mount.

Is there anyway i can do this?

(so the equation won't be 200$ + 20% + 50$ + 20% +  5$ + 20% but 250$ + 20% + ( 5$ + 20%)

where 20% is the tax, or something like that)