All of the merchants I have dealt with that have changed sites, or expanded to sell their products on more than one site, have been more than generous about notifying me and keeping me updated about their old and new products. Although I cannot always follow them to their new site (depending on which one they choose to sell at), I appreciate their courtesy and would buy from them again if I was able to. A little customer service earns a merchant a good name and repeat business as well as references. I guess I've just been lucky to deal with people with pride in their product and the willingness to provide customer support no matter how insanely stupid I can be sometimes about losing my own records.