Yes, Custom Pricing works with all types of cart once it is installed correctly on your theme. However, Custom Pricing's Discount Code Stacking feature works on the cart page only.
For more information on the Discount Code Stacking feature, please visit our Help Center article: https://support.boldcommerce.com/hc/en-us/articles/24362120759700-Discount-Code-Stacking
For more information on how to install Custom Pricing to your theme, please visit our Help Center article: https://support.boldcommerce.com/hc/en-us/articles/360044226212-Installation-Guide-for-Custom-Pricing