Hi, i paid 640e for 20m squared and that included grout, adhesive, reomoving and reinstalling downstairs toilet and new pipe because floor was now higher so connections wouldn't fit. My tiles are the same size as yours.They used almost double the norm with the adhesive because due to a bad build, my floor is completely uneven so extra was needed to make the tiles straight. Hope thats of some use but def shop around for quotes as i was also quoted 1500e for the same job!!! I think the price for porcelin tiles is 20-22e per m squared. Might be cheaper now, im not sure.