Useful part, for both sides

As with anything there are two sides here, the benefit. Firstly, the owner of an RX-100, of course, on the other hand Sony.
This part is really very useful in handling the camera, has a non-slip surface and lets the camera run "steady hand". However, what disappointed me is the fact that Sony raises here an absolute high-tech camera on the market and in the development and design of such a grip "forgets" .... and then demanded more 15,00 Euro for this part.
There should be no more upset about Canon when the sun visor is missing in the lenses ....
For the practical benefits actually 5 star, for the sales policy of Sony, but two star deduction.