Electronics Newegg - Much better searching than Amazon, prices essentially the same. Strongly against patent trolls. They also only charge sales tax in California, Indiana, New Jersey and Tennessee. B&H Photo Video - Primarily a camera store, but also a good source for many other electronics. They only collect sales tax for orders shipped to New York.
More electronics:
B&H is the bomb. They often have the same or even better prices than amazon. And they have a used section which is surprisingly good. I bought a camcorder from their used shop on a whim. According to their grading, the condition was a 9. When I received the unit - it was flawless - I mean the corners on the manual were a little bent - but that was it. That bumped my confidence in them a lot. And if you're in NYC - it's worth a trip to the store. It's super fun to visit.