HOLIDAYMAKERS can pay for the cost of a break in the sun by buying their prescription drugs while abroad. Legally they can purchase their prescribed drugs -- at a fraction of the cost here over the counter -- in Malaga, Marbella , Faro or Lisbon. Those on long term medication and covered by the Drug Payment Scheme, who cough up €132 a month, can particularly benefit. For example, a patient on holiday in Marbella recently bought the three main elements of her prescription. Prescribed for the treatment of high blood pressure, high cholesterol and to reduce risk of cardiovascular problems they cost her almost four times as much in Dublin as in Spain. The products -- Lipitor, Cozaar Comp and Tritace -- in their generic form came to €108.13 in Dublin for a month's supply. In Marbella the same...