Take a look at EBAY
http://search.ebay.com/ws/search/Sal...acategory=2562
Thats what I did last winter and when it came time for me to really fly I was very comfortable and I had no orientation problems. FMS will help you with that. That is the biggest obstacle that you can overcome when learning to fly, orientation that is.
If you want to see the Real Flight Sim just go to your local Hobby Store I'm sure they have one running. But for less than $50 FMS will teach you everything you need to get started.