To maximize ROI, calculate the Total Cost of Ownership (TCO) rather than just the unit price. This includes shipping costs, import duties, and the expected lifespan of the tool. High-quality tools with a 2-3 year warranty often provide better value than cheaper alternatives that require frequent replacement. When sourcing from Made-in-China.com, look for suppliers offering tiered pricing, where bulk orders of 500+ units can yield discounts of 20-30%. Additionally, consider OEM/ODM capabilities if you require custom branding, which can add significant market value to your inventory.