I've been selling on Amazon for 15 years and thought I had my listings & images perfectly optimized since I've spent tens of thousands of dollars over the years on my Amazon listings and PPC. But, since hiring Aaron and E-Com Wala, my sales have increased 2-3x over the last 12 months. I can't suggest strongly enough that you should at least do a month's subscription with them, but a couple of months' trial would give you a better idea. I know that cash flow can be tight at times, but this will be money well spent.
Scott CEO of My Perfect Goatee