Try searching for the terms "baby" or "child". Usually, you'll find the folks selling their bikes at low or very reasonable prices because they have a baby on the way. Other times, it'll be guys or gals selling "their baby". (Hint: The former is going to be the better deal.) You may not always find what you're looking for, but I've found a lot of great deals this way.
I know that many of you already do this but a lot of riders just don't think about it. It's saved my ass more than a few times. Office Depot and its competitors do laminations for about $1.50 per document and it takes no time at all.