raw units, no log, no scaling:
     recency  frequency  monetary  customers
seg                                         
0       24.0       12.0     588.0         79
1        6.0       50.0    2625.0          8
2        9.0       26.0    1241.0         34
3       46.0        4.0     202.0        132
n_init= 1: agreement with seed 0, min 0.304, mean 0.883
n_init=10: agreement with seed 0, min 0.990, mean 0.995
