[Dedas]

"She's awful. You can get 3 paths at 1 each for ~100g. Why don't we compare her to the Oceania Mermage?"

We shouldn't because Tir na n'Og does not have access to Mermages. Why? They have other units, better at other things that Oceania's is not. You see, low price on a good unit has its price.
What I'm saying is that you have to see the whole picture or you will find a lot of things "unbalanced".