Flat rate is for the continental USA, except APO/FPOs. All packages under 15 lbs will be charged a flat rate of $5.95 ($.75 cents for each additional pound). For less than 1.0 lb., outside the continental USA, and APO/FPOs, we charge the carrier's cost based on real time quotes. Some countries will not accept the 50 lb. bag due to size. They will accept 25 lb. For $200 or more orders, Standard domestic shipping is free. We don't charge handling. Most orders are shipped within 24 hours.