It's not just the price, it's that there's not enough reasons to get a tablet over a laptop other than the "new shiny thing" reasons. Laptops are just about as portable and can do more. Yes, there's things that tablets are better at (content consumption like books and movies, touch screen applications), but not enough to justify the price. It's out of "impulse buy" range, and it's hard to think of enough use cases that wouldn't be served adequately by a laptop to excuse the expense.
At least, that's my opinion. I'll ignore the "weight of silver" comment, because I have no idea where that came from.