Does any1 know if people sometimes get off with only a large fine for being caught with �100,000 of valium?

my fiance was caught being a courier when we were desperate for money, he has no previous convictions, it was in january and he picked up a box from soewhere not knowing or asking what was inside and was guaranteed a large sum of money on arrival, we are so worried, we have a 3.5yr old son & wud be devastated