An interesting – if too brief – article in a recent Wired (to which my subscription briefly lapsed) dispenses some basic knowledge on Absinthe. As myth tends to outweigh experience when it comes to this particular drink, the link seemed worth passing along.
After some amount of searching through substandard website, and armed with information from the article, i would humbly suggest Absinthe Online as one of the more credible sites for your potential purchase. Jade Liqueurs is the signature brand of interviewee Ted Breaux – the “Nouvelle-Orleans” is mentioned as being one of the superiorly rated absinthes available.