I don't have the link to the thread on here. But if you search the forum you will turn a good thread which should answer your question.
My personal opinion on the Ducati LED's are that while being expensive, they do look like a very nice piece of kit and look fantastic on the bike. If I could justify the cost to myself I would have them in an instant.
This is all down the personal taste of course but I hated the stock indicators! They were the first thing I switched out when I did the custom job.
Having said that you Americans love those triple D silicone bags shoved into your stripper girls friends chest also ...
If I offend anyone during my stay here ... can I just say that I am from London, thus I am an ass-hole! It's what I do.
So suck it up buttercup.