Start with the target cost as a hard constraint and then work your back.
Work your way backwards from market price to required cost.
Eliminate unnecessary components and complexity
Question every dollar in the bill of materials.
Design out costs before they are designed in.
Having strategic plans set in place will save you from getting caught off guard from unexpected expenses. Always plan for the unexpected, Not going to get get into too much detail today, but it has been a good week so far for me. How is your week going?