magento extra charge vs price import frontend problems
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i have the following problem...
- I have some configurable products in the magento backend 
- I defined some extra charge for the configurable attributes and created my simple products for the configurable products
- now i want to import products and they have prices...
- the problem is that the products now have a prices that differs from the extra charge rule

For example ther is a couch with 2 colours (red and blue) and 1 material (leather). The configurable product has a price of 100 € and blue an extra charge of 10 € and red an extra charge of 20 €. So after creating the simple products there are two couches (red-leather & blue-leather). The blue one has a price of 110€ and the red one with 120€. 

Now there comes the import and sets the price of the blue one to 150 € and the price of the red one to 200€. 

In the frontend magento still uses the extra charge an will show 110€ for the blue one and 120 € for the red one, beacause the configurable product still have a prive of 100€.... 


So my question is: is there a possibility to show the products real "end-prices" (150€ & 200€) and use them instead of the calculated ones (but only if there are real prices from an import!!!). If no import edits a single simple product then the extra charges should be taken...

Hop anybody has an idea which helps me to get this working :)