Yes, both Jungle Scout and AMZInsight offer a Free Trial.
Jungle Scout is designed for Medium Business and Small Business.
AMZInsight is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Jungle Scout Starts at $19/Month when Billed Yearly whereas for AMZInsight Starts at $39/Month.
Some top alternatives to Jungle Scout includes Sellics, AMZ.One, Marketplace Manager, AMZScout, AMZ Alert, AMZInsight, Helium 10, Optiseller, ProfitGuru and AMZRank.
Some top alternatives to AMZInsight includes Jungle Scout, Cenports, AMZ.One, AMZScout, AmzChart, Sellerboard, ProfitGuru, azManifest.com, AMZRank and Semrush E-Commerce Apps (Sellzone).