In the offline business you it is fair to do various forms of advertising such as yellow pages, newspaper advertising, direct mail, or possibly radio and television ads.
Retailers do not have to keep on top of selling prices. http://Roll-Express.Ruwww.Quilt-Blog.de/serendipity/exit.php?url=aHR0cHM6Ly9ucy5tYXhsaW5lci5jb20vX19tZWRpYV9fL2pzL25ldHNvbHRyYWRlbWFyay5waHA/ZD1Bbm90ZXBhZC5jb20lMkZub3RlcyUyRm55OGc0NjQ4