This is becoming BEYOND annoying. I have everything set it, its suppose to cost 150 minerals, 50 gas, take 2 food away, and takes 45 seconds to train. I have it so costs are displayed (Its trainable in barracks)

YET, every freaking time it basically shows its free, doesnt display costs, or enforce the costs I made, its just free. I've done this before and it works fine, but this is just pissing me off now. In the past it kept only showing its food cost, now its showing NOTHING...

Have you gone to the Abilities data type section then looked for the Train ability for your building and then looked at the Info + fields and then edited the units' costs in there?

Yep...