Looking for Amazon product researcher

I’m looking for someone with proven experience in Amazon product research, specifically for 3D-printed products.

Please explain in detail why you believe your research would help me find the best products to sell on Amazon, including how you evaluate:

• Demand and sales potential
• Competition and market saturation
• Profit margins
• Keywords and search volume
• Product trends
• Opportunities for 3D-printed products
• Potential niches with room for growth

I’m looking for data-driven research, not just product ideas. Please also provide examples of previous Amazon product research you’ve done, especially for 3D-printed or similar products.