I had bought an earlier version already, and plan to buy the upgrade. I love this product!
In the market, it does not give an option to buy, open, or manage until you uninstall the previous beta. That was my problem. (BTW, I DO purchase apps that improve my efficiency, and do not collect only free apps. I support developers.) It does not show up as an app in the "My Apps" tabs. It shows up under Input Options. Under Apps Organizer and 2 other app managers, it is not visible. I purchased an uninstaller and finally found it, uninstalled beta 3.0, and installed the new beta. It works great and I love it (always have, and it's getting better).