One Elmo Projector would cost around $700. Having a Elmo projector in the classroom would be a very helpful and useful device. This device many be better in elementary school age setting, but useful in any classroom. Some of the features of the Elmo is the teacher has the ability to show a example of a worksheet to explain directions, example handwriting, and share students work. With the Elmo, anything that is being projected will show on the board, for all the students to see.