Negative price for product options?

Hello,

I am still searching for a cart to use. Zen Cart looks pretty cool..

I have products that I want to sell that may have a variety of options. I would like to make a "base" product that will be purchased 90% of the time. But, I need to have options that the customer can choose from such as color, diameter, length, flag style, etc. Some of these options will require an adjustment to the selling price + or - depending on which option they select. Some options may not require any price adjustment. Example

Color Selection: does not require any adjustment to selling price.
Length: could require + or - adjustment to selling price.
Diameter: could require + or - adjustment to selling price.
Flag Selection: could require + or - adjustment to selling price.

My question is whether I can setup a product with "default" options i.e. color, length, diameter, flag....then based on the customer selection of options do both + and - adjustments to the selling price?? Or, doe Zen Cart just offer for + adjustments?

I appreciate the help.

Mike

When you go to the attributes controller page, you can set the price to +5 or -5. So if your base price is 14.99, +5 would make it 19.99, and -5 would make it 9.99
In short, yes you can do + AND -.