Interesting, I know that in Brazil the same law applies even if both products are immaterial. For example, it was common for nightclubs here to give you an opti

Interesting, I know that in Brazil the same law applies even if both products are immaterial. For example, it was common for nightclubs here to give you an option of charging less (or nothing at all) for the entrance into the nightclub if you spent a certain amount of money in drinks or whatever else they sold inside. This was also prohibited by the same law since it was tying two separate "products". Wikipedia article (in portuguese) on this law cites that even ( http://pt.wikipedia.org/wiki/Venda_casada http://pt.wikipedia.org/wiki/Venda_casada ).