Just bought it for 320 on sale! It seems like a pretty high-quality product from the little I've used it. I will update in a few days about my experience...

edit: Tremendous product, incredible build quality.
The positives are that it supports up to 200mbps and max 4K 60FPS.
With a 128GB card and a bitrate of 70mbps at 1080p, it records for about 3 hours. Of course, this can be adjusted depending on the bitrate you want to use. I use it for recording from the Canon M50 so as not to strain it and cause it to overheat. In combination with an HDMI splitter, I have the image on my computer for streaming, and I can also record separately from the camera to be able to add some shots in the editing process.

The negatives are that when using it to send the image to the computer, it cannot simultaneously record to the card, and there is also a slight delay (due to the converter). However, the passthrough has no delay at all.
Also, it does not support recording in 2K. Only 720, 1080 & 4K.

Other than that, it is an exceptional product. It is not recommended for capturing on the computer, but only in cases where someone wants to record to a card and does not want to strain their computer