Should I buy HOME all together or separately?

I am having trouble deciding what I should actually do since if I decide to buy The Complete History Of Middle Earth which is usually $360 but is on special for $250 at the moment yet I don't plan on getting it right now or do you think should I just buy the 12 books seperatky in hardback because $360 devided by 12 is $30 a book and that is roughly what it cost for most of the books anyway and I heard The Complete History Of Middle Earth has really thin pages because of how many books are in each book what should I do Please help

Here is the Complete History Of Middle Earth Books in the 3 Books I'm talking about:
http://m.bookdepository.com/book/97...8C77VNA8ZRUT&gclid=CJy5lZWPj8YCFdgkvQodkq8A3g

And I'm sure you know what the normal books look like lol thanks

Edit: stupid me it's actually a lot cheaper to buy them combined, but do you think it is still enjoyable to read in such a BIG book.

The books are pretty hefty by themselves. I can't imagine combining them.

I think you could effectively use such a volume as a weapon, if you could in fact lift it.

It’d harder to misplace them. I’m constantly searching for this or that volume I’ve misplaced.