Can't speak as to why others are selling, but mine was in the first load over. So having owned it for 18 months I'd seen everything needed to be seen. Plus 2 nearest friends both have one so I can always get my fix.
With so many sold NIB, I wanted to make sure I was near the first batch to be sold. Saying that it was still a couple of months before it moved, but that's probably down to the trolling on my FS thread.
It is without doubt one of the best, if not THE best machine of all time. The combination of layout of shots, humour, ease of getting to the mini wizard modes, challenge of getting to the later wizard modes all make it fantastic.
Everyone should own one at some point.