I need to implement the code, which, depending on the amount of goods of a certain category of repeat purchases and calculates the new price for this product. Dependence is very nonlinear, an example - in the picture in attachment.
I was looking for documentation
http://kb.x-cart.com/display/XDD/Definitive+guide and read the forum but could not find any documentation or sample code
Please show me examples or documentation, how to work with a basket of goods and prices in X-CART 5. I really want to understand programming X-CART 5.
Thanks in advance!