We do exactly as Google does — if you buy Glide, we allow you to keep your price indefinitely—this is what we did with Legacy Pro subscriptions. Are you asking that we never change our prices in the future, for plans you haven’t bought yet? No, we cannot offer that.
Furthermore, I can promise that we will raise our prices in the future. We don’t have any specific plans to do this now, but it certainly will happen. If this makes you uncomfortable, I understand if you choose not to use Glide for this reason.
I also promise that we will add a ton of new features to Glide, and it will become much more valuable.