Of course, every developer can doing what he likes the most, the point isn't to pay for software, the point is that he haven't said anything about OSA for long time almost two years! I have no problem to purchase any software but in this case isn't worth at least to me...
That's really the key in all of this.
I don't think anyone here including myself have any issues paying for something like OSA, that's not the issue. The issue is, going awol randomly and for a very long time. To be clear, this isn't the first time it has happened either. Again, I do agree that he has every right to charge for his work. After all it's a really good pieces of software, but he needs to learn to be present. I think all of us can appreciate that when giving out a piece of software such as OSA for free, there might be some bumps in the road, as well as slower periods. However, there's a very big difference between a month, or so without anything, to going 2 years with out a peep about anything. Even a simple post to say "hey I'm still here and so on" would suffice.
All in all I really do which him all the best, I really do, but if you are going to start charging, you CANNOT go awol like this anymore.
I completely understand he has to make a living.
But don't forget these are niche tools, they can add a layer to your protection.
I can get Kaspersky Internet Security (1 YEAR / 1 DEVICE) for €11,57.
How much would be okay for OSArmor?
You bring up a good point.
The pricing has to be worth it, because like you said, it's a very niche product, so it won't get the same traction like the big names do. Kaspersky is a good example, excellent software, what can OSA add on top of it?? Nothing really, because Kaspersky does just fine without it. I would argue most major suites will be very similar in this regard. Where it could be of benefit is when using it along side say...WD, but even then you have configure defender and H_C for free. Heck you can even throw VS free in there too.
Again I am by no means saying he should't charge for it, I really think he deserves to get paid for his hard work. However, like I've said above, this business of going Awol for extremly long periods of time needs to stop if he is going to charge for a product. People will be a little forgiving when it's free, not so much when you are going to charge them for it.