Build a Django domain shopping cart

The project requires checking whether a domain exists in the domains table. If not, it is available, pick the pricing information from the extension price, Add the contact details (if the contact doesn't exist in the contacts table, create it), Add nameservers and check out. The check out process checks whether the domain owner has funds and deduct appropriately.

The check domain input field should be able to check for multiple domain availability at once.
The system should check whether the domain extension is supported.

Attached are the relevant tables.