GREAT WESTERN FINANCIAL <GWF> UNIT BUYS BANKS Great Western Financial Corp's subsidiary Great Western Bank said it will purchase three retail banking branches in south Florida with total deposits of 90 mln dlrs. Great Western said it will purchase branches in Deerfield Beach and Hollywood with approximately 80 mln dlrs in deposits from Guardian Savings and Loan Association, and one in Palm Beach with approximately 10 mln in deposits from Goldome Savings Bank.