yea pretty rare. When I first started playing this game I rented it probably 20 times because I couldn't find it in stores anywhere. By the time I had discovered it, it had already been discontinued.
At the time my parents were all scared of buying stuff online for security reasons so eBay wasn't an option...I must have spent 2 years looking for it in total. Finally, my parents bought it for me for christmas, they had found it used at a microplay. I was one happy kid.
You can usually find them on ebay for $40-100, depending on whether or not the manual/case is included and their condition.