This boxed set is available from Amazon, and includes the six indicated books. The box itself is plain white card roughly 9" x 11" x 1.75", with a glossy wrapper around it to make it look pretty.
Inside are the six separate books indicated. See the separate reviews of the contents. I'm pretty sure that the four smaller coloring books are all available ONLY as part of this boxed set - they have no separate pricing, and Amazon doesn't list them by their ISBN as separate times.
At US$10 this is a damn fine price for six books - assuming that you want five separate coloring books. For the same price, you can of course buy the Meredith Meredith "Jumbo" Spider-Man Color and Activity Book and get nearly twice as many pages of coloring as you'll find in this box! But if you're looking to hand out fresh coloring books over a rainy vacation week, or give them away as prizes at a birthday party, then there's plenty of material here.
The wrapper shows pictures of all six books inside, and then says "contents may vary". My contents were exactly as shown - so I guess they're just reserving the right to change the fillings if they run out of any of the books at some stage in the future.
Five coloring books, total of two hundred or so pages - smaller than the Jumbo coloring book. As per the other reviews, the actual content of the coloring books is pretty low-grade stuff. Nothing you could claim your money back for, but just rather uninspired and repetitive.
The poster book is a bonus of course, that's pretty much worth the cover price alone.
Crappy coloring books, but the poster book is good and the whole thing is available for a pretty fair price. On average, perhaps it just scrapes in on the low end of three webs.