Board Thread:Questions and Answers/@comment-6031967-20130120135147/@comment-6021747-20130120164237

For the most part, there are really only 3 Rares that would even be worth the effort to skill up (as far as trying to sell them is concerned). And just to clarify, that is ONLY if said Rare is Evolved, and since we are talking about selling, it should be PM, as well, since if it is not, you will be lucky to get low end prices for it. The reason you shouldn't bother is the fact that most Rares are going to become part of a backline, so their skill level doesn't matter at all.

The elite Rares I could see doing that for (Atum, Umbral, and Atar), since when PM, their ATK is high enough to make them front line worthy; however, most people that can afford to spend that much PP/ED on a Skill 10 Rare are more likely to be going after UR's, or so I would think.

So, to answer your question, IF you have a Skill 10 Atum, Umbral, or Atar, then yes, the value could be increased by 50. If it is not one of those 3, then no, the value does not go up by 50. You may be able to increase it slightly IF someone needs it for frontline, but that would normally mean they have limited access to PP/ED anyway.

*This info is also found on your other thread in Trading Post, consolidated here*

Hope this helps anyone else that was wondering about this.