Don't forget to go on a tour of your preschool! Before you sign up your child for the school, find out if they offer a tour where you and the child can walk around and see what there is to do and see. This is a great time for them to meet some of the other kids there, too.
Preschools often offer payment plans which can lessen the cost of tuition for many parents. This means that you'll make monthly (or other increments) and untimely it will allow you to find the most affordable solution for you. In some cases, discounts can be found.