How to manipulate the price?

I am trying to set the base price of a product within a TPL file.

Basically, I have a custom product that derives its price via a formula. After that, the options need to still work.

I am trying to override the price vr.modifier but it is not working.

Any ideas?

hmm try product_data.tpl or even in the core, in fn_catalog.php i thinkā€¦