Canon
Yes, both Power My Analytics and AMZInsight offer a Free Trial.
Power My Analytics is designed for and undefined.
AMZInsight is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Power My Analytics Starts at $24.96/Month when Billed Yearly whereas for AMZInsight Starts at $39/Month.
Some top alternatives to Power My Analytics includes Porter Metrics, Funnel, Megalytic, ETLrobot, Admetrics Data Studio, Analytics Canvas, Albato, Supermetrics and Halo.
Some top alternatives to AMZInsight includes Jungle Scout, Cenports, AMZ.One, AMZScout, AmzChart, Sellerboard, ProfitGuru, azManifest.com, AMZRank and Semrush E-Commerce Apps (Sellzone).