Ketamine can be extremely profitable and it also has the lowest risk. Any amount of ketamine cannot get you more than 10 years in prison. People importing kilos from India pay like $8-$12 a gram, I am not sure what it sells for here but I have seen it go for anywhere between $20 and $100 a gram, depending on the area. Best case scenario you make $92,000 for every kilo you sell, worst case scenario you make $8,000. I think average price for end users is somewhere around $50 a gram, so most people probably make about $40,000 for each kilo they sell. Not that bad for risking only 10 years in prison, especially since dogs cannot smell it. The demand is also very large and people go through it fast.