If you are looking for original and comfortable flats, Maloles is your answer. The prices range from 170€ to 250€, which is a lot for a pair of flats. But they worth it, the quality is beyond excellent.
Sandals, 230€ Le Bazar Parisien
Satin flats, 250€-shopbop
175€, Le Bazar Parisien
Lanvin-esque flats, 180€ shopbop