It might be easier to find a 330 ml bottle of Prague ham than a 330 ml bottle of Prague beer.

The methodology might be valid in other parts of the world. Over here, discarding 99% of the market looking at a narrow niche produced a totally random number.

If they reran the thing doing 500 ml bottles, my bet is on under $2.49 and I am negotiable all the way to two bucks if you allow hotels to serve you draught beer.