There's a common belief in Poland that the very same goods (down to package/barcode) sold in countries west of it (Germany in particular) are much better in quality than the ones sold domestically. It's especially common when discussing cleaning chemicals - people believe that local products are diluted, or sth. I don't know whether this is a case of "grass is greener on the other side" or it is based on reality.
(And there's one exception to this I've heard of - some people believe here that Lipton tea brought from US tastes much, much worse than one bought locally ;)).