One google search for 'licensed serenity coat' - and this is the first link listed. http://www.therpf.com/showthread.php?t=23915
Seriously, search function will do you a ton of favours in here (if it's an existing item, someone has picked it apart)
I'm pretty sure that was the first generation of officially licensed Serenity Brown coats. I believe that they sold for between $300 to $400. I remember researching the crap out of these but never pulling the trigger on buying one because of the price and it not looking quite right. I was bummed when I had waited too long and they weren't available anymore. I wound up getting new version which looks more accurate for the same price. But if you got a good deal then i 'd be happy with it.