By caves I mean humidors...much like when one refers to a wine cellar as a cave. All of the major stores in the UK as well as other places around teh world, have storage areas. JJ Fox, Dunhill, Davidoff, etc. all have stored cigars for collectors over the years. I was given these Churchill collection cigars by a friend in the UK, who bought a few lots at the auction. He did not say what the price was.
Here's an excerpt from an article that included some talk of this auction.
"Recent auctions at Christies are testament to the fact that many consider aged and pre-embargo cigars to be worthwhile and solid investment. No one can argue that some of the prices being paid at these auctions are truly astounding. During the Christie's auction on October 5th in London record prices were being paid, including one lot of cigars that sold for more than USD 1,600.00 a piece. The more than 400 boxes of cigars drew more than USD 833,000.00 in bids with the bulk of the buying being done by collectors in Hong Kong and the United States. One of the highlights of the auction was the sale of 43 boxes of smokes from Lady Mary Soames, the daughter of British hero Sir Winston Churchill. Bidders paid just over $219,000 for the cigars, from corona-sized, four-decades-old Don Candido Dunhill Seleccion Suprema No. 50s (USD2, 940.00 for a cabinet of 50) to robusto-shaped Dunhill Cabinettas (USD9, 075.00 for a cabinet of 25) made in 1980."
As far as flavor, I've had 90 year old cigars that were basically liie smoking air and 50+ year old ones that were divine. It's all in the particular cigars blend and how it was stored.