I managed to buy a sealed copy of Ardy Lightfoot on amazon.co.jp for 2,000 yen:
According to aucfan (a YJA archive), this album hasn't sold even once on YJA in the last 10 years. So it must be pretty rare.
I'm now trying to decide whether I should open it. On one hand, there might be some collector out there who is looking for sealed Nippon Columbia albums, and there can't be many left. On the other hand, maybe no one cares about this album anyway? And life is too short to just keep it sealed?
Any opinions / votes?