Well, it all depends on what kind of a wallet case your interested in. I never looked in the direction of the Twelve South BookBook until Brinda mentioned it in the 4s case thread that we usually post in. I started looking at it, and last Saturday found a shop that had them. I purchased the older version(no red color on the "XII" binding part) in vintage brown so it was 30% off - got it for $44 bucks. I am VERY pleased overall with the quality of the leather and craftsmanship. I'm usually very finicky with cases (as some of you know) but, I gotta tell ya, I won't even take my phone out to use a bumper.....I love this wallet style case that much I've had it a week now and it's starting to break in nicely too Also, all buttons and charging port are easily accessible, so you can charge your phone without removing it from the BookBook, and still have control over the mute toggle switch/volume up down & sleep/on off buttons. also, being a woman, I look for every chance to NOT having to carry my handbag if I really don't need to LOL. The BookBook gives me my essentials that I have to have with me - my phone, debit card, credit card, my dL and a bit of cash that I slip into the inner pocket under where the cards are stored.
I would suggest checking it out if you don't mind spending that much on a wallet/case. The only thing that some people don't care for is you need to pull up the top red tab and slide your phone up a bit to take pictures or video. Now, I don't use my camera on my 4S like ALOT of people do I still rely on my Cannon power shot, so this is not an issue for me at all.
If you visit the TwelveSouth.com website, there is a video clip you can watch of people using the BookBook in action, as well as seeing if there is a shop in your area that may carry it. Keep in mind that Apple discontinued carrying them, I called a few in my area. None had it & when I asked each store why it was discontinued in their store they didn't know. But if you call some Apple shops in your area you may be lucky enough to find one that may still have them...idk.
Good luck with you search for the perfect wallet case!! I am absolutely hooked on the bookbook indeed