Here we have a product which is discountable, however there are 2 additional options that aren't 
discounted.<br>
As the customer checks the box, the value in the dropdown is passed with the option to the cart automatically.<br>

The prices are:<br>
Up to 100 - $9.99, 100 - 200 are $8.99 and 200 plus are $6.99.<br>
<form action="http://ww9.aitsafe.com/cf/addmulti.cfm" method="post" name="form1" id="form1">
<input type="hidden" name="userid" value="B5124789">
<input type="hidden" name="return" value="www.tne.co.uk/2006/mals/">
<input type="hidden" name="discountpr1" value="50,9.99:100,8.99:200,6.99">
<input type="hidden" name="product1" value="Product name here">
Quantity of product:&nbsp;<input type="text" name="qty1" size="10">
<br>
 Add Color for $0.10 each&nbsp;
 <input type="hidden" name="product2" value="color">
<input type="hidden" name="price2" value=".10">
<input type="checkbox" name="qty2" value="" onClick="document.form1.qty2.value=document.form1.qty1.value">
<br>
Add Insert for $0.12 each&nbsp;
<input type="hidden" name="product3" value="inserts">
<input type="hidden" name="price3" value=".12">
<input type="checkbox" name="qty3" value="" onClick="document.form1.qty3.value=document.form1.qty1.value">
<br>
<input type="submit" value="Add to Cart">
</form>