Inexpensive, cat proof, upholstery fabric?  

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What a sweet looking little cat. My "Mr. Chopper" would simply fall in love.
Best,
Mark

joann
try joann.com And find a 50% coupon for them (sign up for the promotional mailer, they're in there all the time). When the fabric's not on sale, you can apply the coupon and it is almost as cheap as stealing.

CatProof??
When we finally reupholstered our Dux couch and chair I went with nylon due to it being mostly bullet proof. Nothing like $10 a yard however. His Royalness put a claw in it once and then I went online an bought from a cat site some double backed clear sticky tape which I applied to the usual prone places. Didn't take any time all. He never even considered clawing or shredding again. I don't recommend leaving the tape on for more than a few weeks. The stuff really did the trick. We also took an old wooden wine box an stapled a piece of low profile neutral colored carpet onto the flat side. Looked decent and the cat used it always...
Good luck!

P.s.
What is the swell looking bookshelf shown on your flicker site?
Hazelnut

Hazelnut-
The book shelves are IKEA. Its a total of 4 of them, and I think the whole wall came to about $120.00, they were part of the Varde line, and they hold a TON!
And thanks everyone!