Top four reasons why N/A shows up when looking at products
The top four reasons why AZInsight might return N/A on the sales and estimation revenue are:
1. ASIN is in a category that does not have enough products to calculate sales data for
2. ASIN has been moved from into a category recently
3. ASIN is new to the Amazon catalog or has been deactivated and reactivated recently
4. ASIN has been disabled and then relisted