Be very careful when trying to find low prices as many sites online are not shops but discount centers that aquaire their goods from non authorized sources. They cannot guarantee you quality as they do not care. They want to buy cheap.
Campy should not be a problem as are other goods.
Just make sure you get what was advertised and payed. Many will mix older parts or not ship complete gruops. So read and ask to make sure you get what you want.
Real shops are now offering 2003 parts. Just to let you know.