I bought an RS components case (part number 819-3655) and despite it being listed as RPI-2 case, that's not 100% the case (pun intended)
Although the RPi-2 fits nicely within this case, the mid plane cut-out for the heatsink does not line up with the CPU on the RPi-2 board, a non existant issue if you don't use a heatsink.
If you did want to install a heatsink, for whatever reason, then it's nothing that a sharp knife can't fix
I haven't seen any asthetically pleasing vesa cases for the RPi-2 but as wrxtasy stated, the RS case is cheap and can be stuck to the back of your TV/monitor using 3M tape.
If you want to be able to easily remove the case, use
3M velcro tape instead of 3M adhesive tape.
Neither velcro or adhisive tape is as secure as nice metal vesa case but such does not seem to exist.