I've sure they feel good and smell good but I don't like the look of them. The gold etchings are a bit gaudy. And the price? Ouch. But it's good that the option is there for those who have lots of money (or are serious collectors).
Personally, I thought The Space Trilogy set looked (slightly) better.

They look like they would belong well in an academic library or museum. Sadly, the binding is not as eyecatching for kids in a public or school library as the Chris Van Allsburg covers of the Scholastic editions. The covers even kind of make the looks seem Victorian rather than from the 1950s.

If everyone has their vice, mine is spending more money on books than I probably should, if that's even possible. Ha.

I love the Easton Press editions, but there are some other nice ones out there. I haven't bought it yet, but I like the look and feel of the Barnes & Noble omnibus edition, the one that's bright blue and has sort of a faux-leather exterior. I think that one would stand out on a library shelf!