I tried to insert my normal memory card into my RX10m4 camera the other day and it would not go all the way in.  The card is intact and no plastic parts have detached.  I had a gentle poke around in the slot for any debris and could find nothing.  I imagine a spring has become dislodged, or similar - i.e. a mechanical problem.  As I'm not a technician I can't be sure, but it's certainly not an electronic issue.  Having returned the camera for repair (out of warranty), I've received an estimate for £215, which apparently entails replacing the entire main board, because the slot is, as they put it, "attached".  I had to make several enquiries before I could get them to tell me the problem and even then they said they could not determine why the fault had occurred or what actually was damaged.

I'm aghast that a simple mechanical issue like this requires such a hugely expensive process and strongly suspect they take the easy option to replace everything rather than bother to do more detailed part replacements.  

I had a previous identical camera which suffered minor and short-lived liquid ingress but which Sony claimed had rendered the camera completely useless, despite there being power and several functions working.

I think Sony makes excellent products but their after-sales and repair service is very poor.  They are also very poor at providing helpful information in their repair estimates - they quoted "carriage", "labour" and "SY-1082_COMPL(SERVICE)" as the three components of the estimate - the latter being completely useless as information to a layman!

Does anyone share my feelings here?