I have around 50 or 60 receipts this year from iTunes, so likely it's a fat number of bucks, but I haven't broken them out into books, movies / TV and music yet so it beats me and probably I don't want to know. Far less on music this past year than on books. And less on movies for some reason. In some past years I have dropped just scandalous amounts on music and movies / TV. Right now I'm only addicted to Downton Abbey as far as TV goes.
With what I have now in my music collection I'm pretty content, although I prowl around and grab up a few things here and there. I wouldn't call my recent music picks eclectic, more like just shy of random! I still buy classical CDs now and then, and once in awhile a movie DVD when I can't get a digital version.
Books are the thing I blow my budgets on now, I just love being able to cart around the equivalent of hundreds of board feet worth of bookshelves in an iPad. Yet I still buy quite a few paperbacks and hardbacks too. Nice thing about them is no problem giving them to someone else, and no problem accessing their content when the power goes out and all my blink-eye toys eventually run out of juice unless I go out to the car to charge them.
I feel lucky to have lived to see these innovations that have brought us books, music and video in digital formats and on hardware we can tote around in a pocket. When I was a kid there weren't even any computers (well there were, but civilians certainly didn't have access to them), never mind the portable gear we have now. Counting my blessings!