row 1 all chips are $3 each shipped
row 2 chip 1 is $4 shipped, chip 2 is $3 shipped, chip 3 is $12 shipped
row 3 chip 1 is $3 shipped, chip 2 & 3 are $7 each shipped
row 4 chip 1 is $8 shipped, chip 2 is $7 shipped, chip 3 is $10 shipped