Actually, Adorama doesn't charge sales tax; the state of NJ charges it and for NJ residents we are legally obliged to collect it.
There is a provision on the NJ income tax forms for you to declare out of state purchases that are subject to NJ state sales tax; many NY / NJ residents actively choose to purchase from retailers who collect on their behalf, as it saves them the bother - in any case, you really do need to pay that tax when filing your state income tax return...
As I've said before, I'm a long time customer of Adorama (since the 1970s) and they are my preferred retailer for photographic supplies. I also appreciate that they pay Helen to monitor and respond on this forum.
But, I have to say, on the tax issue, the comments are a bit disingenuous. Adorama (As well as B&H, Amazon, eBay and many others) choose not to collect the sales tax on orders in states where they are not legally required to collect the tax. They could do so voluntarily, but they don't. So, to suggest that collecting the tax on behalf of New York or New Jersey is a great service they provide to their customers in those states, raises the question – why aren't customers in all the others states they serve worthy of the same service?
Hopefully, in a few months Congress will take action to assure that all online retailers with more than $1 million in annual sales must collect sales taxes on behalf of their customers.
Judging by Helen's remarks, I must assume that Adorama is in favor of the proposed federal law. I would be interested in knowing if that is the case.