I think that's too... subjective, I guess?
How good of a deal it is depends entirely on what you want out of a device.
I've played with iPhones...
And I don't think, if you were someone who'd like the N900 initially, you'd have a problem with not getting resale value out of it. I know I certainly never intend to resell.
So I disagree with the notion that it's objectively a better deal....