It is called ecommerce. The computer industry is full of them, I should know about that. A wholesale company has its own buyer to buyer site kind of like wholesale. Resalers can lease their site for a small fee & use their own domain. The site that the domain is actually for, has to complete all transactons but the computer parts all come from the same company. They slap your return mailing address on the package to ship direct to your customer. YOu also have the ability to chose your markups on products shipping & sales depending how much & which ones you think is right for you. I know of about 8 computer sites like this , all have the same basic layout with the exception of the domain name & sometimes the hoome page. I can't say this for sure about op's but I am sure alot of it is the same concept. Most companies know how to change the urls's on all the pages to match their own domain but you can tell when they don;t really know what they are doing. It is very legal for sites like this to mask their own domain or point to their own domains because they have leased the rights to do so. That's how I know alot of the same places use the same pharmacies because they actually come from the original site. All sites would not be like this, but I would say 90% of the email sites you get with links are ( always wondered about those affiliate programs. well there you go now you know.