These would be considered pre-sales questions:
- Can I add products to my cart via ajax in CartThrob?
- Can I add a custom field where I can store some JSON for each product in my cart?
- If I add the custom field, is it accessible at all stages of checkout, from cart item to the Thank You page and Order Confirmation Email?
- How customizable is the Discount engine? I need to have discounts by SKU.
- Can we have one product and modify it's attributes, like price, SKU, etc before it is inserted into the cart and have it retain that info through out the process?