God, yes, the marketing is horrific. For a long time, the only way to buy one was to join the cult, invite them into your home, let them do a demonstration in your kitchen and then remain in contact with them forever. Thankfully, you can now get them online or, like I did, second hand, and avoid cultists completely.
(In their defence, the cult would have been great in pre-internet days. They aren't kidding when they say it's a completely different way of cooking, and if you were left alone to learn, it probably wouldn't happen. These days though, I just hop online for info.)
If you already have a fair few appliances and you're not strapped for space, I'd give it a miss for now. It really can't do anything your other appliances can't. We finally broke and bought ours because our stove has one working hotplate, our food processor is "meh" and my beautiful, beautiful mixer finally died. At a grand off (in Oz, they're $2100 new), it was a reasonable purchase and has let me clear the food processor, bread maker and a few other things out of the cupboards to make more room. And, as I said above, it does act as a second pair of hands in the kitchen, which means I can be sauteeing dinner while reading "Spot Goes to the Farm" and neither activity will suffer. Milling spices and grains without digging out my ancient, rusty mill is nice as well.
Cleaning is actually pretty easy. Not as easy as a mixing bowl, but much better than a food processor.
(Also, watch that video from Jonny5. They are amazing.)