You can install you store on as many domains as you like but you must purchase a seperate license key for each domain. The storefront that we install for you is good for only one domain.
Note: If you purchased a Resale Package storefront loaded with products, you are not required to re-purchase those products. You are free to place those in additional domains. If you purhcase another store license, we can copy your database over to another domain for a small fee.
Submit a Support Tick for further assistance, and pricing for additional domains.