In GW #1 I have 143 737-100/200s, of which the crew training component of commonality is 37,845/month. I have 135 MD-80's, and I get charged 3,290,686/month for these planes. Similarly, with my 376 HS121's, the crew training cost is 6,143,419/month.
As a result, I think there's something wrong with the 737 calculation as it should be in the 1-2 million range, not 38k.