On your 30k, you get 1925€ per month (23k/yr) after corporate tax/social security etc. We call this "net" even though income tax is due on top of that.
For income tax, you pay taxes according to the following brackets (on yearly income) :
- 0€ to 9700€ : 0%
- 9701€ to 26791€ : 14%
- 26791€ to 71826€ : 30%
That means for a single person with no children, you pay an incone tax of 234€/yr, or 20€/month.
My use case for this will be the switch from French Azerty to Chinese Qwerty (bilingual speaker). I would buy this in a heartbeat if it had an attached numpad.