products options and percentage calculation problem

This is the product I have the problem with


If i select 500 business cards the total is £80, if i add the lamination option i want it to add £8 (10%). Instead CS Cart will only add £5.70 (10% of the original base price of £57.00) no matter what quantity I chose it only adds £5.70.

Another example: if i select 5000 as a quantity (new total=£210) I would want CS Cart to add £21 to the order if lamination is selected, not £5.70!!

How can I make CS Cart calculate the 10% additional cost for the lamination option based upon what is selected in the Quantity option?

It should calculate this correctly in the cart, right? If the “price” is set to 80, the options should calculate 10% of that and add it to each product.

it doesnt:(

it just keeps adding 10% of the base price (£5.70) and not 10% of the base price + option 1.

Any ideas?

Try the demo store, it should defo add the cost of a modifier on top of the previously modified price.


tried on the demo store and it does the same thing.

[URL=“Instant Demo - CS-Cart Multi-Vendor Demo Try Free for 15 days”]Instant Demo - CS-Cart Multi-Vendor Demo Try Free for 15 days

it adds the second % option to the original base price only and not the modified price. Really annoying.