Ahrefs is a great all-in-one tool for understanding the web marketing strategies of –e-commerce sites. It helps you easily analyze a competitor’s marketing strategy, to grow your search traffic, and to monitor your niche.

Features:

• Backlink checker
• Broken link checker
• Website authority checker
• Keyword generator
• Youtube keyword tool
• Amazon keyword tool
• Bing keyword tool
• SERP checker
• SEO checker
• SEO analyzer
• Keyword rank checker
• Keyword difficulty

Free trial for some key features, 7-day-trial for USD7

Pricing https://ahrefs.com/pricing