When I bought my EOS R3s, they had a cap on the hot shoe to weatherproof it. I found the cap was very easily dislodged so I ended up putting some gaffer tape on them to hold them in place. When the R1 and R5 Mk II were released, a new cap was introduced which had a locking mechanism built in. I decided to get a couple of these since they would also fit the R3. They only cost a little over $20 but, when they arrived, I was amazed to see the large box and the high-quality bag that was included for something so simple. How much of the price for the cap was for the box and bag?