I have been using ECommerce platforms for many years and I am excited about the release of Zoho Commerce. Well done Zoho!
In my experience cart solutions often require modification to follow local practises such as taxes, exchange rates and information displayed. This usually results in the need for custom fields to be designed for products and orders and the ability to write custom code to manipulate them I do hope that these will be added as a matter of urgency.
For users setting up a new store, this will be less of an issue, but it will be essential if you plan to migrate users from other platforms. Often, small tweaks can make a huge difference to sales numbers and abandonment rates.