FYI, in EU (or at least in Finland), euros are rounded to the nearest five cents and stores don't even accept the 1 and 2 cent coins, even though they exist.
I remarked while I was over there at how much sense this made to me and wished that the same would happen in the United States, because I feel like pennies are worthless. I'm glad to see someone experimenting with it in the US.
http://en.wikipedia.org/wiki/Coins_of_the_New_Zealand_dollar#Current_coinage(But, too be fair, prices for b2b stuff are normally quoted without VAT (or MWSt to be German).)