I've made Happy Translating and Happy Dictionary free on the Mac App Store. When it comes time to renew my account, I won't be doing such and they'll come down. rainblocks OS X is $5, but that will go away as well. My apologies if you bought that, but my sales numbers say you probably haven't. I'm not bitter, just more educated now. I intend on making it available in other ways. The yearly $100 developer fee is sadly a price that I can't justify with the numbers I bring in, and I'm much happier sticking with just the iOS store. I use Happy Translating daily in my work, but it has a few things that I don't like about it and have been meaning to fix. If I do, I might make it available for purchase in other ways. Might because the App Store takes out the various hassles I don't want to deal with, and are not worth dealing with on the scale that I'm at. Developing these apps is not something that goes in the regret pile. I learned a lot, got a useful tool for translating and instilled a healthy habit of coding a bit each week. That's worth a lot.
Get 'em while you can. Happy Translating: https://itunes.apple.com/us/app/happy-translating/id533786505?l=ja&ls=1&mt=12 Happy Dictionary: https://itunes.apple.com/us/app/happy-dictionary/id562805289?l=ja&ls=1&mt=12 rainblocks: https://itunes.apple.com/us/app/rainblocks/id886945715?l=ja&ls=1&mt=12