### Clue: Supply not sensitive to price changes in the Spanish wine clubs (9)
### Answer: INELASTIC 
 ### Explanation: Definition: Supply not sensitive to price changes
  IN EL(the definite article the in Spanish) ASTI(Italian bubbly,sparkling wine made in the region around the town of the same name) C(abbrev. for clubs, the playing cards suit, as used in eg. bridge notation)
Defn: In case you would like an explanation – Economics 101:  Assuming consumers are "rational" and other factors remain constant, the total demand for a commodity usually decreases with increasing price.  A commodity's demand is inelastic if, the total demand for it is relatively unchanged in spite of,not sensitive to a wide range of price changes.  This is commonly evident for basic necessities like a staple food – you must have it, whatever the price.  The same can be said for the supply-price relationship, but in the reverse direction.