Of course, you can purchase just one and see how your child reacts. For most, there is a positive reaction and many parents continue to purchase the movies. A lot of parents of younger toddlers like My First Signs but they find they have to watch with their youngster to learn the signs as well.With television, as with anything, moderation is key.
However, if you purchase one and find that your child loves it, then you have the option of purchasing another. Of course, there are box sets for sale as well. You can buy the DVD collection for your kids. Parents feel good knowing that there is an educational air to the television their children are exposed to.