Depends entirely on whether or not say $1200/yr for a productive work tool is useful to you.
$100/month is not much if it saves you time. At an hourly rate of $50-60 hr which is not even that high for a professional in Australia, it only needs to save someone like that 2 hours a month over 3 years and it has paid for itself.
If you're carting a lot of data around with you, the lack of needing to do as much storage management on your device could well cover that.
Not for me, but I wouldn't buy that spec