Sure. I don't begrudge the cost of the devices. In this case I'm calling out the missed opportunity of having built most of such a device already and not following through to expand its appeal to more potential customers by offering a particular accessory.

Also the opposing viewpoint to remind yourself of is that hey, SOMEBODY was the first to make one of these things and started a company to do it! I've given up on ideas before starting because of the manufacturing technology required, only to see a company like GoPro come out of nowhere and own a market segment.