Discounts based on Amount

To define discounts for large purchases, go to your website's admin tool (/admin). Click on the folder tab, then choose Configure the Transact e-commerce.
Enter the Product Center, and pull down on Class tab. Discounts apply to purchases which exceed dollar amounts you specify.

Special Discounts

In addition to the product class-based discounts, you can have a global discount on the entire purchase. For instance, you may wish to offer a discount to people who enter a special code they have received from you. Here's an example that gives the person a 10% discount. You can implement by putting this on the page just before the final checkout:
If you have a discount code, enter it here: 
On following page (purchase.html or any page with "Action" set to "Purchase") have the following code:
<!-- IF "INPUT: Discount_Code" == "1234" -->
You have received a 10% discount!
<INPUT type="hidden" name="Discount"
	value="<-- CALCULATE "CART: Total_Product_Price" * "0.10" -->">
<!-- /IF -->
You could implement the same thing with an option for free shipping, by changing the last part to:
<!-- IF "INPUT: Discount_Code" == "1234" -->
You have received a free shipping discount!
<INPUT type="hidden" name="Discount" value="<-- CART: Total_Shipping -->">
<!-- /IF -->

Displaying to the User

You can show the discount to the user with the following HTML tag:
Your Discount: <!-- CART: Discount -->
In a surcharge situation, you may want to add the surcharge into the shipping and handling costs. It is common to use HTML like the following:
Handling Charge: <!-- CALCULATE "CART: Handling_Charge" - "CART: Discount" -->
(subtract a negative number to add them together.)
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