How do I start arbitrage between Amazon and eBay?

I've been thinking about starting an arbitrage between Amazon and eBay. I'm interested in learning how I can make money on the price difference by buying items on one site and selling them on the other. Can you suggest where to start and what to look out for?
 

I've been diving into this world myself recently. The key is to find items that are cheaper on one site than the other and make money on that difference. First, you need to figure out which niches are the most profitable and where you can find great deals. Here's another link to a complete guide where you'll learn everything on the topic of Amazon to eBay arbitrage
 

Hi. Getting started is simple: look for items that you can buy cheap at one place and sell more expensive at another. It's cool if you have some analytical tools to help you understand what and when it's best to sell it