Couple of weeks ago, a very nice K1 ( I think) 750 sold here in NZ for $38,200, a massive price for here. In about 2004 I sold my restored K2 for $6,400, which was then the highest price I had seen one go for. Sold a nice 500 in about 2010 for $6,200, again the highest price I had seen for a 500. I sold that to fund my next 500, which I sold , having owned since 2005 for $10K last year, so the trend is pretty obvious and totally predictable. As Caluser points out, anything 40 years or older attracts cheap registration, even if it's an XS1000, or KZ1300, while my 1999 VFR cost $90 for 2 months. Go figure, but it's apparently based on statistics, but quite why you are more likely to crash a 39 year old bike than a 40 year old one escapes me. I'm wondering if the huge price paid for the 750 will drag up prices of the smaller ones, given that they cost just as much to restore, and are often more rare.