The 7City quant course fee is around U$20k, not 150k!
I think before the 2008 crisis (I was going to say "Lehman shock" but I'm not sure if this is common outside Japan) it was considered a good deal: you could easily increase your value by more than $20k/year, especially if you were already working in finance. Now, I don't know. Although the surviving banks/funds started re-hiring, I don't think there's as much demand for quants now as there was in (say) 2007.
I think before the 2008 crisis (I was going to say "Lehman shock" but I'm not sure if this is common outside Japan) it was considered a good deal: you could easily increase your value by more than $20k/year, especially if you were already working in finance. Now, I don't know. Although the surviving banks/funds started re-hiring, I don't think there's as much demand for quants now as there was in (say) 2007.