You are right! On no other approach would we ask the pilot his minima, write it down, and remind him at the end of the approach. They could be anything from 100 feet AGL and upwards. For many years we have used the GCA/PAR's technical minima: 100 feet/ 1/3 NM (2.75 degrees). "Radar's minima. I will continue advisory." And by the way some operators specifically ask us to "stop talking" on the very last part, as they are busy with either landing or going around!