Difficult question, because not all bids are created equal :) So let's say that you're browsing through bids, and you see a couple for $200-$300 which look lik

Difficult question, because not all bids are created equal :) So let's say that you're browsing through bids, and you see a couple for $200-$300 which look like they could be fun, and then another one for $1,500. Obviously you're going to spend a lot more time preparing the bid for the $1,500 project than for the other two. Plus, I only bid on major projects that I personally found interesting, and I think my enthusiasm carried across. In general, for the major projects, I got pretty much well every one that I bid on; for the minor projects, probably around 25%.