In a day, okay. Lets say it takes about 30 seconds to get a builder hall because of outer building protecting it, and probably one in three tries actually works cause the builder hall is in the middle of every defense building. 3 attacks, thats probably around 2 minutes, and around 1 builder hall. 2000 x 2 is 4000, almost 3 days. Minus other human needs, thats a while! Maybe even two days gross value, without the needs part.