I'm of the belief that if you have an itch, scratch it. You wanted the Konosuke, and now you're trying to talk yourself out of it due to the price increase. If you can reach (afford) the itch, scratch (buy) it.
If not, and it's more about value, the there are other potential knives that will likely suit you well.
I know nothing of the Gesshin Gina, or Sakai Yusuke knives so I can't comment directly on them.
The Richmond Laser....out of stock, but a great less expensive alternative.
The Suisin Inox Honyaki wa's are incredible knives.
The Tadatsuna wa are basically clones of the Suisin Inox Honyaki knives....so similar it's hard to differentiate them side by side other than looks.
Of those, I would have to say that the Konosuke is my favorite albeit by a small margin. They are all great, great knives.
A western handled alternative, for me at least, would be the TKC knives:http://www.chefknivestogo.com/ic24gy.html
I have two production gyuto's that have survived my sell off....one is a knife you can't be any more and the other is a TKC. Awesome knife.
Kiritsuke....are we talking traditional or the kiritsuke shaped gyuto's? Traditional, no, you don't need one. Gyuto version....not a fan, but I understand the like....they are an interesting shape.