I'm not sure if you're against it, but they have some decently priced ones on ebay. Seems like it can go for around $35 shipped. Only key is to find a good seller. Wish I had advice for you on the dupe part though... looking forward to hearing others' comments.
Yeah, I can understand why. I've received a few knock offs through Ebay. It's annoying to deal with all the red tape of getting your money back. Hopefully someone will have a good suggestion because I'm also interested in a hopefully cheaper dupe so I can try MSFs I didn't want to purchase at full price.