My name is Tahir. i have a great Experience in Amazon Services. My Expertise are,
1. Amazon Product Research
2. Product Sourcing for both PL & Wholesale.
3. Listing Products.
4. Optimization
5. Shipping Plans
6. Product Research for Drop shipping
7. Managing your Amazon Account A to Z.

My Criteria to find a winning Product is,
1. Product should have Minimum ROI 15% to 35% in wholesale and 25% to 50% in Private label..
2. Minimum seller on listing from 3 to 20
3. Amazon or Brand shouldn't be in seller list.
4. Reviews should be start from 200+
5. Rating of product should be start from 4.0
6. Lifetime BSR shouldn't be above 100k and should be 60k less in last 90 days.
7. Weight should be under 4lb.
8. Variation should be count 1.
9. Price should be start from $10 to $40.

Tools i am using
Helium 10
Jungle Scout
Keepa Pro