Price and its effectiveness.
Easy installation, comes with extra adapters
The plastic housing does not flex much when you squeeze it, seems decent quality plastic. The cable also seems fairly thick and good quality, but it is not stiff enough to cause the unit to sit awkwardly. The 1080p video shown on my monitor looks good and responsive for normal desktop use (I'm not gaming on this pc). Have not tested the audio jacks, but the unit supplies a good audio signal to the monitor over hdmi. I like that it can be plugged in to a USB-A port and and I like the included USB-A to USB-C adapter.
It works great... again
Everything works - no problems with picking up monitors, no extra steps if I disconnect and reconnect, etc. Exactly fits my needs