Oh yeah, the books are impressive in their own right. However many items you think they sell looking at the website, the book reveals you were a couple orders of magnitudes off. 1000+ bible-thin pages of well laid out tables and product photos. It's pretty much what the website would look without any filtering of the items.

The books are fun to leaf through on occasion, or if you need to take up an extra 3 inches on your bookshelf with something yellow. If you have one, it makes you feel like a real engineer. But I greatly prefer the website.