: When buying a varietal case (e.g., all Cabernet), remember that in many regions, only 75% of the wine must be that specific grape; the rest can be a blend.

: Shipping heavy glass bottles is expensive. To encourage bulk buys, many wineries and shops offer free or flat-rate shipping once you hit the 6- or 12-bottle mark.

: Many retailers offer a "case discount," often ranging from 10% to 15% off the individual bottle price. For a standard 12-bottle case, this can mean getting one or two bottles for free.

: Common in "introductory" offers from wine clubs to provide extra value for new members. Expert Buying Tips