I get mine from mountain rose herbs. They are so strong, the oils eat through the caps in two days, so I can only make up a day or two at a time.

I will say that at one time, I recovered using premium spice rack clove, but after using MR's and seeing how strong the oils are, I never buy anything else.

I do not recommend buying them already bottled, you can buy empty caps anywhere, I get mine from Swansons.

Ask for cloves which are not irradiated...

I get mine here, not sure whether he posts oustide of Australia:

http://www.ebay.com/itm/260760805221?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m...