… where your full time job pays less than the GP's part time job
[Ed.: actually, thanks to 'recent developments' causing the USD to depreciate, it's pretty exactly double.]
(Only the highest of the local minimum wage setups in the US are slightly higher than the German one, e.g. CA's $16.50)
That's why everyone in the US works full-time if they have the choice. I would HAPPILY work 20/hr a week at half my rate. Such a job just does not exist. I would have to take a huge, huge paycut for that.