3dCart has been an unmitigated disaster for us.
. Their 'customer support' is a joke - at best. I have never had a question or issued answered or resolved. The pat answer is "That's how we do it" or "there is nothing we can do".
. They make changes without notice and demand ridiculous settings - like a 12 character password for your email.
. Contrary to what some reviews advertise, they only allow a maximum of 4 pictures for a product that can be available to their vaunted 'zoom' feature.
. Their interface to Quickbooks is a joke. You can have product options with a negative value (e.g. the option reduces the value of the basic product) - but then their QB interface refuses to download that sales receipt.
. Their 'ship manager' is even worse. Half the time it does not work - I think because their system is overloaded - and the rest of the time it is slower than molasses in January.
. Getting anything done is agonizing. You have to 'click' multiple time to accomplish a task.
Bottom Line ... DO NOT USE 3DCART!!!