I personally use 0TB per month across 6 CPX21 servers (I know I’m over-provisioned; that’s not the point).
Kinds of is the point tho, you're hogging resources you don't actually need (not talking about traffic here ..).
People probably spam-provisioned cheap CPX boxes to get cheap bandwidth.
Also, complaining about a "large 27.52% price increase" is kind of absurd when the absolute value of the increase is just under 2€.