Reddit reviews Cowboy Bebop Boxset

I'm not sure, I was surprised by it to but thought maybe I stumbled upon a goldmine?

Here it is:

http://www.amazon.com/Cowboy-Bebop-Boxset-Hajime-Yadate/dp/1591825903/ref=sr_1_1?ie=UTF8&qid=1395719007&sr=8-1&keywords=cowboy+bebop+manga+boxset

http://www.ebay.com/ctg/Cowboy-Bebop-by-Hajime-Yadate-2003-Paperback/4516981

But then:

http://www.ebay.com/sch/i.html?_odkw=cowboy+bebop+manga+boxset&LH_Sold=1&_osacat=0&_from=R40&LH_Complete=1&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.Xcowboy+bebop+manga&_nkw=cowboy+bebop+manga&_sacat=0

All the books without the box goes for like $40

What gives?

The set I have has 5 books. 2 of them are part of one story called "Shooting Star" and the other three are like compilations of things that just give more character and could me seen as filler stuff if they were ever in the show. Really enjoyable.

I picked it up at Media Play at least 10 years ago. This is the set I have

I think when I got it, it was on sale from $50 to $20.