The functionality of Ozcart is the same whether you choose to have a custom or standard design. Custom design applies to the look and feel of the website pages, and does not include changing the way that the functionality of the cart works. If you have an enquiry about the functionality of the cart you would need to contact us for a quote before you buy.
If you have something specific that you’d like us to do, then a custom theme might be just right for you. Please contact us and tell us what you want to do, we can let you know if it is possible and/or any additional charges that would apply.