Priced by Attribute Percentage?

[helpme]

Hi, is there any way to price by attribute but instead of $ to use a percent? For example I have several products that can be customized but my supplier charges 35% for the customization. Therefore the customization could be as much as $900 and as little as $100....I don't want to charge grossly overcharge or grossly undercharge. Any ideas how I can do this? Thanks for your help!

[Ajeh]

Look into the Attribute Price Factor and Price Factor Offset ...

These can be set up to compute a price based on a percentage of the products_price ...