People who have been on a smartphone with data for a while and are used to it. They won't be trying to justify $45/month they will be justifying $15/month extra for great speeds. I'm not saying that $45/month is acceptable just that people will still go for it that have been on a $30/month data plan on Verizon with (if you're lucky) 1-ish mbps.
I hear ya. And really, I'd pay $45/month but no higher. And that's only because I have no internet connection at home or work of any kind.
So I use my phone in place of a computer. I have a crappy old PC that someone gave me (which was really nice) and I tether my BlackBerry to that if I really need to use a computer.
So I use about 2-3 GB of data a month on my BlackBerry. $45 would be worth it to me.
I'd rather $30 though!!!