The thing is not hard to use once you are accustomed to it. More detailed instructions may help. It is very easy to use once you have it figured out. It helps to show someone first how to use it I have found.
No I do not think that the 3.0 will still be $10.... so what? No big deal to me, as I believe no one will bitch about it if is even $20 if it is much improved.
Do you have the 1st 2.0? I've heard the updated 2.0 with the glass sleeve comes with a bigger heating coil. The 3.0 will be still $10. I'm pretty sure that's what was posted by the company. Once people play with it for a fews days they'll swear by it IMO. Took me a few days to get used to it, but now its what I use 99% of the time, 1%= I forgot it at home.