Amazon offers its Prime members the Planet of the Apes: 5-Film Collection on Blu-ray for $22.98 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $3.98.) That's the lowest total price we could find by $19, although we saw it for $10 less in January. The set features Planet of the Apes, Beneath the Planet of the Apes, Escape from the Planet of the Apes, Conquest of the Planet of the Apes, and Battle for the Planet of the Apes.