the appraisal of provincial agriculturist pio tadina , chief agricultural appraiser rafael t. david of the dbp , commissioner balagot and commissioner rojas , respectively , in the amount of p616,000.000 , p1,006,400.00 , p1,044,163.70 , and p1,171,369.50 , is patently extravagant , considering that the property was bough in 1957 ( 1956 as claimed by appellants [ pp .