Yes, it's the UB1 breakout board that I'm referring to. And it's not a forum, but the manufacturers website. (Where it says "Forum" is a link to their Thai forum)Your link takes me to some forum, and a page with a $320 package using a completely different breakout board.
The UB1 is a $180 breakout board for the UC300ETH. The UC300ETH mounts directly to the UB1. so you don't need a 5LPT motherboard. That saves you $40, and basically makes the UB1 a $140 breakout board.
It's a better breakout board than any CNC4PC board.
3 ports of 24V I/O, PWM to 0-10V speed control, relays, and analog I/O.