An ESTIMATE is NOT anywhere close to SALES ORDER functionality. BUT, It's the ONLY option since QBO is steadfast in not implementing ANY sales order functionaility. It's a poor option too as it can't decremet/reserve inventory, and a million other things that happen with real sales order functionaility. It's pathetic that we're at this point in QBO's life and still NO sales order funtionality whatsoever without spending more# on an outside app.