Technical Dolphin gauges?

Has anyone here used Dolphin/Shark instrument clusters or gauges as sold on Ebay? They look OK, but I figure based on price they may be Chinese junk. I can't find any reviews on them. A cluster for my Chevy truck is less than half of Dakota Digital...

 

I once knew a girl with a dolphin tattoo on her...let's just say a bikini covered it. Every time I hear the word dolphin since that is all I can think about.

 

Not to be annoying, but they show up in discussions if you do a search...this was the most recent thread, but there are others: https://www.jalopyjournal.com/forum/threads/dolphin-gauges.1275164/

 

Don't buy cheap digital gauges! My son is on set #3 on his car that only has around 10,000 miles on it. He hasn't learned yet, he bought another set of cheap digital gauges. I taught him better then that.