How to create startup cost? [solved]

[hank]

Hope someone can help.
I use Joomla 2.5.22
Vm 2.6.6
All my products have a cost of $10.
I want to charge the customer with a startup costs through a dropdownlist, which are added to the total price of the quantity of ordered product.
Like this: quantity x $10 + charge.

Dropdownlist:
Charge 1 - $50
Charge 2 - $100

I have tried with Custom fields, but the charge is being added to the product price and not to the total price of the product.

Thanks
Hank

[Milbo]

This can exactly do that http://extensions.virtuemart.net/products/quantity-related-price-calculation-detail

[hank]

Hi
Thanks, i will check it out