Each category (for example, AZTEC_ABODE_A, JAPANESE_ABODE_A, EGYPTIAN_ABODE_A, etc. until GREEK_MIRACLE_ENHANCER) has 26 numbers separated by a tab. These numbers correspond to the building's characteristics. However the only two numbers you need to be concerned about are the first two, which indicate the Wood (first number) and Ore (second number) requirements to construct that particular building. For example, the "AZTEC_ABODE_A" requires 280 wood and 0 ore. You can in turn edit all the GREEK buildings' cost requirements to whatever desired by changing the first two numbers that appear in each category.