Balsamiq is already so cheap. We use it for our business and every time it renews I just think they could be getting 5-10x what they are. That in turn helps drive a better business and product.
Balsamiq is a per month subscrtiption isn't it? Personally, I need a tool like this once per year or sometimes even less. So if Konty was a one off payment of $20-30 I'd be more inclined to purchase.