Shawna,
Thanks for your question!
Strollers can be an invaluable bit of travel gear! It keeps the little ones from burning too much energy walking all day long, and it saves your back from having to carry them everywhere!
Stroller rentals in the parks from Disney are a great way to go, if you only need them while in the parks. Disney also recommends a featured provider if you want to rent something for the duration of your trip, including when you are back at your resort, or traveling around between resorts, parks, and other venues. You can find out about that service at the stroller rentals page, linked to in this answer.
As to the price of park strollers, please remember that prices can change over time. The pricing I show here only reflects the currently posted rates, as of the time of this answer. You will want to refer back to the
stroller rentals page just before the start of your trip to see the current pricing so you can keep your budget in order. At this time, a single stroller has a daily charge of $15, and a double has a daily charge of $31. There are multi-day rentals available as well, matched to your length of stay. Those prices drop you down to $13 and $27 per day for a single or double stroller, respectively.
By the way, you might want to look at some of the great resources the website has to offer for families traveling with younger children. The
Planning for Preschool Kids & Little Ones page is particularly helpful.
Have a Magical Vacation!
Doug