Getting on my socialist horse here for a second; If the manufacturers priced them slightly cheaper, they'd sell more first time around and have less clearance!! Capitalism - it's an illness and a madness.
Occasionally a film will produce themed sets, Indiana Jones is a good example with 20 and 30mm sets from Galoob and Disney respectively [to be covered another day]. Another was the third remake of King Kong, Playmates took-up the franchise and produced a couple of play-sets with various figures and monsters and these are some of them!
Like the [otherwise totally unrelated!] Star Wars Miniatures game, this collection contains so many figures in so many issues that it's impossible to follow if your head is already full of 1950/60's plastic toy soldiers, so I tend to buy them by the half-handful at car-boot sales, also they were issued in 2000, the year I consider the cut-off for serious collecting/documenting.