50 Elo per rank seems about right for ~10k according to historical data from the EGF database.
100 Elo per rank seems about right for low amateur dan, 200 Elo per rank seems about right for high amateur dan and 300 Elo per rank (i.e. full handicap stone, ~3 pro ranks) seems about right for pros.
Those number are behind the EGF rating system since 3 years ago. OGS uses a less skewed mapping between Elo ratings and ranks, where 100 Elo per rank applies more to mid amateur dan than to low amateur dan.
Vertical axis is Elo per rank.
Horizontal axis is OGS rank as an integer, where 30 corresponds to 1d IIRC.
Red curve is OGS mapping.
Blue curve is EGF mapping.