By Daniel Kline Amazon offers lots of good deals but as Admiral Akbar said “it’s a trap,” or at least it can be. Amazon (AMZN) – Get Amazon.com Inc. Report Prime Day delivers a sort of adult Christmas in July. The annual event delivers Black Friday-like sales in the heart of the summer — at a time when nothing else is happening and back-to-school and the holiday season still seem a bit far off. It’s a chance to buy things you need or items you’ve long had your eye on for a good price. You can save a lot of money if you plan well, know what you’re buying, and really do your homework. Of course…