It's not a bad deal. If you were going down the “Sell it Yourself” road and use PayPal to collect money with say a one dollar app, it would cost you 32¢. This is sans the hosting & exposure, which is more than Apple charges its developers on the App Store.
If you run your own webserver, Nginx in my case, you can easily hide mailto links from spammers with the HTTP rewrite module. Add the following three lines of code to your Nginx server config and replace any “mailto:user@example.com” links with “/mail/user/". location ~ /mail/(.*)$ { rewrite ^/mail/(.*)/$ mailto:$1@$host redirect; } The same can be done for other schemes like for making telephone calls. Again, add the code below and replace any “tel:555-1234” links with “/call/55512345/". Continue »