That limit is fine for a one-off use of Overpass. If you set something up that uses the Overpass API regularly, then divide those numbers by 100.
The servers can do about 1.5 million requests per day at the moment. It’s hard to estimate the number of users in the days of botnets. But if we work with the 30k users that Roland has estimated, then you can do the math of what constitues a fair share: 50 request per day or less.
Please also note that limits should always be counted towards an application. If you have an app or website, then the usage counts towards the sum of requests made by all your users.