The DVDs are around 20+ dollars, last I checked. I'm searching on eBay for one I can afford.
Magnificent Seven is less, of course. Be neat to have the two.
I think the author missed out on another major element in the differences in the movies...the egos of the actors in Mag. Seven.
Some of these guys were new-ish, others were at their height of success. I was just watching background stuff on THE GREAT ESCAPE, and there is quite a bit of actor-ego-massaging going on...strangely enough, with Steve McQueen, one of my favorites. He wanted to be the HERO. In an ensemble movie...that's quite a feat.