Vistaprint offers a Custom Case for Apple iPhone 4, 4S, or 5 bundled with a $5 credit on a future purchase for $9.99 plus around $4 for shipping. (The credit will be noted during checkout. You'll receive an email detailing how to redeem the credit.) Assuming you use the credit, that's $5 under our January mention and $17 under the lowest total price we could find for a similar custom iPhone case sold elsewhere. You can add text to existing designs or upload your own photo.