Where can I buy Ariva in Houston? How much is it? ?

I purchased some online a few months back on Ebay - I got 20 boxes for $20. I cannot find it on Ebay anymore and do not know why? Did it get some bad press?? I love the stuff and it totally keeps me away from the cigarettes when I take it. Anyhoo - on their website, it's $2 a box, which is twice as much. I'm wondering if I can get it around town for less. Gracias.