The I-Inhale is nothing like an e-cig. It is large, takes butane and has a two year warranty. If every they ban eliquid, you can vape molasses or tobacco in it, 98% healthier than smoking. It's a long term insurance policy.
Whether you will like it is a personal thing, again it is not like an ecig at all.
But take your favourite model of ecig, add up the money you have spent on batteries, atomizers and carry cases, then work out if it is worth it. Over time, it has worked out the cheapest model I have. Add in the versatility. You can make howbrew that would kill an ecig and the I-Inhale will handle it just fine.
It is easy to use, no charging batteries, no carts, no dead atomizers, no leaking, its just different. Ecigs are a pain at first for most of us til we get used to them.
So yes it is worth every penny, if you are willing to try something completely different.
Andy