Before people start coming at me for "charging for gradients", I want to make one thing clear. If you want to, go vibe code your own version. I'm can't nor will stop you.
But you need to think of your time, as an example, let's say you earn $100 per hour as a software engineer. You spend 3 hours on this, that's $300 you could have earned. Is the $180 lifetime subscription worth more here?
This is how I would think about this, and if you still want to vibe code it, go for it 馃