I'm having some weird browser issues in uploading the last screenshot. So here it is in text....
Subtotal for any column;
if the subtotal of column 'quantity' is '>=' a value of '20'
Flat rate charge of '14.50'
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.