Euric wrote: "The existence of pound prices is in itself proof that the trader is not selling by the kilogram at all."
Not at all. As I understand it, a trader is allowed to display either metric only or both metric and non-metric prices, but must conduct the final transaction (i.e., weigh and price) using the metric price. If a customer asks for a pound of something, the trader must weigh out approximately 450 g and price accordingly. (For most items, giving the customer the precise amount requested isn't really practical, whichever units are used.) Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator]
