I totally admit and agree that the psychology of such things matters, but isn't that just the same thing with a different coat of paint?
e.g. "Comcast announces that effective next June, prices will be raised by $30 for all customers.
In order to mitigate this price increase, Comcast is also announcing that low-usage customers who are willing to have a 1 TB transfer cap are able to get a $30 discount."