Dog Moon
Adventurer
I almost never base my opinion about a book on the book's art. More often, I'm put off by the errors in a book. I bought one of the Explorer Guides and it was printed wrong. I got rid of it fast, even though the artwork was amazing.
For me, depends on what the book is for. If I'm getting the book cause I plan on using it, I'll get it no matter how the art is. If I'm not really interested in the subject [or the editing is horrible or something] but the art is cool, it's possible I'll still get the book.