Brian,
Here in the states our economy runs on oil and the plastic credit cards. One great advantage to a cc is you only pay for what you use (no fees ect.) Pay it off within the grace period ( it like having cash). I have been purchasing Jerrows Mythl B-12 from I herb for two years by cc and no problems. I'm one who would like supplements better monitored as there are cases where the public is getting ripped off with doses of flour, cornstarch and who knows what else.