I haven't used one, but my thoughts.....
The advertisement acts as though it is a complex procedure to run instrument clusters... it isn't. Each gauge is just a stepper motor... some older ones are 12v and they are a pain sure, but newer ones will also run on 5v. That board runs a single gauge..... a teensy, Arduino or similar device could run an entire instrument cluster.
I guess what I'm saying is if it was a board that controlled the entire cluster then that would be a reasonable price, but as-is you would spend $100 or more just in electronics or only be able to run a tacho, neither of which are appealing solutions. Keep in mind it doesn't even have output for a over-rev light.