The '94 price you have been offered seems to be about the current price in the UK. Although this is a superb wine, I think that there are other wines that you could get which would be better value - or buy these at auction in the UK where you should expect to pay about £30 per bottle.
The price for the '97s looks pretty good. The '97 is a great wine (although I prefer the '94) and £30 is a good price. If these were my only choices then I would probably buy the '97 and cellar it for many years.
However, the best thing you can do if you want to check the prices is to have a look on Winesearcher.