Is there a contribution that does multiple pricing options?

[drymetal]

Let's say I wanted to add a product called Security System 1. At $300.

And that product had the option of adding:

Door Contacts (drop down menu maybe) with options 1-10 with each option automatically adjusting the price in increments of $30.

Window Contacts - Same as above.

Smoke Alarms - Same as above.

So say you choose 2 door and window contacts each and 1 smoke detector. Your product price would end up being $450


Is there a software add-on or something that can be integrated into Zen Cart that does this already?

[kobra]

When you add the drop down for window contact you also add values like 1 contact, 2 contacts etc