By far two of the best values on oud I have gotten have been through Oudline. Oud that hold their own against $400 artisanal oils for about 1/4 what people try to get for the same quality oils online. If you inquire be sure to specify your interest in only pure oud oil. They also sell oud blends and perfumes (they specify what % agarwood oil in their catalog).

I haven’t ordered from them in a while and am looking for specific suggestions from their current line. Has anyone ordered from them recently?