No tax advantage in NY unless you lie on your taxes. They make you pay the sales tax on your return for the last few years.
I used to do almost all of it but I've been growing more and more dissatisfied with Amazon lately and this breaks my heart because I have been with them since they opened their web site and were selling only books but they just don't care about customer service any more. At all. Finally had the final straw when they went and canceled my Prime without getting a go ahead from me. I was disgruntled over buying something for an app on my Kindle Fire and not getting the tokens I bought for the game. Yeah, only $10 but still. I asked if I cancel my prime will I get a refund for the unused portion of the year and the dude in Costa Rica (yeah, they farm their chat out to Costa Rica, demand a supervisor because the supervisors are in the US and can actually understand you) misunderstood and cancelled. Well, sobeit. You severed the tie and you're not getting it back.
Their timing was bad because I moved to a village with tons of great local shops though it needs a clothing store. I buy most of my clothing on-line from Blair, though. Comfortable, nice casual wear at a decent price. There are still a couple of things I have to buy from Amazon because no one else has got them -- though I'm really going to search down the manufacturer and see if I can buy direct. And, of course, books for my Kindle have to come from them. Though I may just switch to the local library. Don't have to worry about the tax on free.
Got to be honest, though, Amazon going South really, really breaks my heart. I've loved them for the last 20 years. Oh, well, I love shopping local. Gets me out of the house and makes me feel alive.