Grocery{  name: G3 markup: 1.25 cost: 25 }Grocery 
 Grocery{  name: G2 markup: 2.25 cost: 400 }Grocery 
 Grocery{  name: G1 markup: 3.25 cost: 500 }Grocery 
 Produce{  name: P3 markup: 2 cost: 150 weight: 4.5 }Produce 
 Produce{  name: P2 markup: 1.5 cost: 200 weight: 6 }Produce 
 Produce{  name: P1 markup: 2.5 cost: 300 weight: 1.75 }Produce