This is the best price I could find from ebuyer. The case is £21.57 on Amazon.
All of the powerful features of the Galaxy S4 in a smaller package is just what you needed. Now you want protection, but don't want added bulk. Get the trusted OtterBox case for Samsung Galaxy S4 Mini and enjoy protection that answers all of your wants. This slim case provides tough protection while adding barely any bulk to your device. The exterior of the Commuter Series case for Galaxy S4 Mini deflects impact shock away from your device and it is slick for easy retrieval in and out of pockets. The slip cover absorbs impact and provides good grip in the hand. The Commuter Series case for Samsung Galaxy S4 Mini provides slim yet tough protection for your device.
Slim and tough Commuter Series case for Galaxy S4 Mini withstands drops, shocks and dust
Case is sleek enough to slide into your pockets yet tough enough to toss in your bag
This sleek 2-layer case barely adds any additional bulk to this miniature device
Preserve the S4 Mini with tough and trusted OtterBox protection