Walmart offers the Fisher-Price Little People Disney Princess Songs Palace Play Set, model no. X6031, for $34.98. (Amazon charges the same.) Opt for free in-store pickup to avoid the $4.97 shipping charge. That's $15 off and tied with our February mention as the lowest total price we could find. This play set features dancing action, sound effects, seven play areas, and includes Snow White and Cinderella figures. It requires three AA batteries, not included.
A close price: Target has it for a penny more.