“Each HOUR would be worth the equivalent of $10, which was about the average hourly amount that workers earned in surrounding Tompkins County,[9]”
https://en.wikipedia.org/wiki/Ithaca_Hours
The stark difference, is that Ithaca Hours do not represent TIME.
Ithaca Hours started out by crediting time just like TimeRepublik (1 Ithaca Hour = 1 hour), but it didn't work so they switched to 1 Ithaca Hour = $10.
Our goal is to promote a global economy of Time Banking with people all over the world. Because TIME is created equal, we challenge everyone to think of exchanging services or value for time itself. The value someone can deliver in an hour, is what determines the value of that person’s skills.
If person A can produce 10 widgets in an hour, and person B can produce 100 widgets in an hour, then how much is a widget worth, 1/10 hour or 1/100 hour?
Person B sells his widgets for 1/100 hour. He gets 1 hour for one hour of work. In order to compete, person A must sell his widgets for 1/100 hour. He gets 1/10 hour for one hour of work. A's time is not equal to B's time.