I've only ever seen items with +3 to UMD. Do higher pluses exist in DDO?

So the question I have is it worth it to spec UMD to say 8 or 9 with idea of using scrolls, wands, or items with say 20-24 UMD?

Or is that just going to be a 100% waste of skill points?

What could I reasonably expect to boost my UMD to with stat bonuses and items?

Thank you for feeding my knowledge.