Products priced as individuals but sold in set quantities

I am stuck on a problem. I want to have a product that is priced as an individual unit but sold in set quantities. For example, a widget is $3.00 and is sold in lots on 1,000. I want the price for the widget to show as $3.00 but I want it to only be added to the shopping cart in multiples on 1,000. Any ideas?

Posted: Oct 11, 2011