An interesting question, as it happens. Throat Guard sells in NZ for about $18 on line, which is about US$12 for 30 pills. But I've only just noticed that Epoca sells for 5,250 yen, which I make to be USD$57 for 40 pills. Could be a translation error, but I don't think so. In Taiwan, the Fresh Breath Kit apparently sells for $1980 (presumably Taiwanese dollars), or US$60. In NZ it sells for $43 online, or USD$30.