Heh, nifty.
Almost overwhelming scientific evidence reveals that it’s possible to work out the price of a bottle of wine without seeing the label:
http://www.itchysquirrel.com/
Well, OK, “overwhelming” might be overstating it a bit. “Scientific” and “evidence” likewise. But it could be a handy trick, particularly if someone works it out for wine prices in countries other than Britain. The magic formula (this one for white wine):
Price of bottle = (Dimple depth in mm + £3.49) / 4.3144 – about a pound
The dimples are apparently called “punts” and there’s no agreement on exactly what they’re for. My favourite suggestion is that they used to make the bottle more stable – a flat bottom would need only a slight bump to make it unstable.