How should a robot integration quote break down cost items to avoid later change orders?

• Itemize robot body, controller, teach pendant, cable package, and end-effector unit prices.
• Price safety fence, light curtain, and safety PLC separately by point count.
• Quote vision calibration, PLC integration, and teaching by man-day with hour caps.
• List shipping, installation, commissioning, and training separately, not as a lump service fee.
• Define spare parts list, warranty period, and overtime rates to lock change-order pricing.