I have a sony action camera model

Hdr-as100v

I accidentally dropped it(I know I messed up... )

The back part of the camera that is suppose to lock and hold the battery and memory card together does not lock any more. I have gone through the process to send it in to get repaired and it will cost at the LEAST 166.50

I can fix it myself if I can find the part myself and it would be probably 25% of the cost that they are asking. I bought the camera for around 300 and I could be a brand new one for around 200. Why pay 166 when 40 more dollars could buy a new one?

All I need advice on is where to buy a replacement part. I've looked everywhere and still no luck.

Help me geniuses of the internet!!