I never compared their potential. I just meant that because the B series engines were and are cheaper they usually sell off faster. A K series I know has massive potential and obviously is more expensive so the buyers are very very limited, as well as the engine themselves.
As far as new and old goes, the point arises that even this engine would be around 6 years old. The last k24a3 came in the 2007. In any case my point wasnt about that to start from. I had just meant that he has decent offers and hopefully with patience will get better ones since either an enthusiast or someone who really needs it will buy it. Cheap power comes from many engines so most people wont end up buying this.
I hope this makes it clear !!