Yeah, being a "professional flipper" is actually pretty wrong. Sure, you can do it while working an actual job to pad income, but you might as well run a pawn shop if you consider it your main profession. It doesn't contribute to society, just greedy people hoarding deals and reselling at a markup to take advantage of other consumers.
Retail Arb folks, particularly on Amazon, are usually selling at ~MSRP or less, as the battle for the Buy Box can be pretty cut-throat. In the end they are selling for what the average mom and pop store would sell it for. It's a volume driven business, hence the endless trips to stores, which is why I would get pretty sick of it rather quickly. With the brand restrictions kicking in on Amazon, it's becoming a dying business model unless some other site rises up with the same traffic levels as Amazon.
And yes I realize you were trolling me, but I do find the RA world pretty fascinating. I'm in a group with a guy who rakes in thousands every November-December flipping Black Friday deals on Amazon. You get enough volume and even selling Nest thermostats at MSRP can bring in some big bucks.