I never tried Blu's, but I tried several mini e-cigs here and there that my friends had, never did it for me. Flavors were meh, throat hit/vapor were very little...and seeing how much my friends had to recharge just made the whole thing inconvenient.
Fast forwarding a couple of years later when I actually became a heavy smoker and realized I had to quit, I did a better job than my friends and did research...and got the tools that made me quit right away. Now my dad told me he was introduced to blus by a friend...and he wanted me to buy him one with a $100 worth of refills

...I insisted that he tries an ego instead, and he, of course, wanted the thing that looked like a cigarette.
So whatever makes him quit. I still got him a few other PV devices, a few clearos/attys/cartos for him to try, and 300ml of e-juice from several vendors. Funny part is, I got him more devices that last longer and have VV with enough 5 times as much juice than the blu's for pretty much the same price.
I get it the blus might be excellent, and whatever makes someone quit smoking...but the price point is ridiculous. Well, I'll give them a try with my dad, and we'll both be the judge of their worth. See, I get it, some people want the feel and the look of the cigarette, I wanted to before I started vaping, and for the first 2 days of vaping, then I couldnt care less....just not worth paying 2-4 times as much for something that has an advantage for 2 days with dozens of disadvantages.