So you have a new version you want us to buy. All well and good so far. I'm happy with the "old" BTT, so the new one should be worth it.
Thing is, you've "upgraded" the old version to continually keep spamming us about upgrading. This is not happening. And if and when it happens, it will be only when WE choose it. If you keep nagging us to upgrade, the existing version will go out the window as well.
It isn't (about) the cost, it's the manner.