Families have been advised to shop around before deciding on care homes for elderly relatives. The Consumer Council surveyed 160 homes and found prices ranged from $3,000 a month to more than $20,000, although the study did not compare quality. 'Two factors determine the price; the level of care and the size of the flat,' said spokesman Dr Lo Chi-kin. 'If you have a private room to yourself and the staff are more qualified, the more you will have to pay.' The complete price list is shown in the latest issue of Choice magazine. The chairman of the Association for the Rights of the Elderly, Rita Lam Yu-kiu, called on the council to work with the Social Welfare Department to research quality. She said the department was in the best position to assess quality.