Amazon UK offers Planet of the Apes: Evolution Collection on Blu-ray Disc for $18.50 (£12.99). During checkout, it drops to $15.43 (£10.83). With $4.39 (£3.08) for shipping, that's the lowest total price we could find stateside by $21. This 7-disc set includes Planet of the Apes (1968), Beneath the Planet of the Apes, Escape from the Planet of the Apes, Conquest of the Planet of the Apes, Battle for the Planet of the Apes, Planet of the Apes (2001), and Rise of the Planet of the Apes.

This Blu-ray set is region-free, and the films themselves will play on US Blu-ray players, but note that the extras and special features may not.