Amazon offers its Prime members Just Dance Disney Party 2 for Xbox One for $7.50 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) Outside of the seller below, it's the lowest total price we could find by $5.

A close price, Merchandise Outlet Online via eBay offers it for $6 plus $2.99 for shipping.