The region-free U.K. version of UNIVERSAL CLASSIC MONSTERS: THE ESSENTIAL COLLECTION on Blu-ray is currently on sale at Amazon for $32.49. Counting the Spanish-language version of DRACULA with Carlos Villarías (which is included as a special feature) there are nine of Universal's best horror movies included in this set. That breaks down to about $3.60 per film.
It's my understanding that the U.K. and U.S. versions are identical in content and differ only in packaging. But they also differ in another way: the U.S. collection is currently selling for twice as much on Amazon.