Buy completed apps & games for Android and iOs

We are looking for indie Android developers that have fully completed applications and games. Apps and games we need to expand our portafilio and offer new services in long term. Offer a payment between $50 and $500 depending on the value of the application or game. *We not request the source code, but the application should have a link to our website or market, and be subject to some small change like add ads or other. And of course adapt and prepare the package to upload it to market. Our offer is for a serious business relationship, stable and durable. Initially our interest is for Android applications and games, but within a few months need iPhone and iPad apps. The apps & games that we are search: Prank apps or fun little apps or games. Apps & Games for kids. Casual games. Other proposals from developers.