Is it better to make 1 perfectly accurate quote or 10 somewhat accurate quotes?
This is a very common question, and the answer is that sales is a numbers game. The more quotes you get out there, the more likely you are to make sales! If it takes you the same amount of time to make 10 average quotes as it does to make one perfect one, then make and send 10!
It is better not to send out any truly inaccurate quotes if possible, but they do not need to be 100% perfect on the first contact. It is always possible to make revisions once you have piqued the interest of your potential buyer.