The market may well be rising for these consoles but they are the most common to appear on trademe and it's hard not to find one if you're looking. I would be waiting for a boxed one which is quite common but till now I've watch these consoles sell in the sub-$30 range, even when with a number of cartridges. $50 I would have thought was quite a steep price and haven't seen many sell for that kind of $$$s.
This sold for $20 with 5 carts -
http://www.trademe.co.nz/gaming/other/a ... 728981.htm - and is more typical of the price I've seen, of course factoring in missing tips, etc.
This sold for $50 but that after the guy talked up the auction describing it as "very rare only ever seen another in tepaa museum" and "very rare will find it hard to find another for sale again." (they come up virtually every week or two)
http://www.trademe.co.nz/gaming/other/a ... 969705.htmThis sold for $39 and is boxed and good condition and is the much rarer boxing, which in my estimation is about 10 times rarer (I've only seen a few for sale versus tons for the Force 2, e.g.
http://www.trademe.co.nz/gaming/other/a ... 325844.htm, sold for $50).
It looks like the price ceiling has gone up a bit.