Why do I have to set two prices for the top level domains (TLDs) I am selling?

Each web hosting plan offers one promotional domain name. This domain can either be offered for free with the hosting plan, which will increase the wholesale price for the plan by $9.00 for 1 year USD, or it can be offered at a discounted price. This promotion is valid for only one domain name, when a web hosting account is ordered. All additional domain names are charged at the regular pricing. That is why, when setting the prices for the different TLDs, you can customize both the price for the discounted domain name and the regular price for the domains that the client may choose to order afterwards.