A free domain is offered with all hosting plans, however this includes only the most common domain extensions such as .com, .net, .org, .uk, .us, .biz or .info.
Other domain extensions will incur an additional cost.
If you exercise the right to refund, any free domain offered will be charged at the prevailing rates (.i.e., deducted from the refund). For the .com domain this will be $14.99.
You can read more about the free domain offer at TMD Hosting here.