Example
Suppose your country group 1 was the UK, which supports first and second class postage, and you want to charge 1.70 for second class post and 2.00 for first class, up to 50 units of weight. The rates would be defined as50 | 1.70 | 1 | UK Second class 50 | 2.00 | 1 | UK First classSuppose you also supported different methods of shipment. Just add another rate for the same weight and country with a new Method title.
50 | 100.00 | 1 | Knight in shining armour