Yep, if you have an Android based phone. Amazon.com has an app store where you can buy your apps. You can buy them there instead of the google marketplace. What is the advantage? Well there are a few:
1. You only need to buy once then can put on all your devices. So if your wife buys an app, you can install it as well.
2. Amazon offers a free paid app everyday. So an app that normally costs money might be free. You have to check everyday though. I have found some really good apps that cost $15 for free. Its well worth checking everyday.
Here is the link: http://www.amazon.com/mobile-apps/b?ie=UTF8&node=2350149011