Merchantwords Starts at $30/month for a standard license, if you purchase through this link: https://www.merchantwords.com/fbanotes
you can join for only $9/month. This is not an affiliate link, just a nice discount.
MerchantWords: Offer | Amazon Keyword Tool
We collect the search terms that real online shoppers use every day on Amazon, Walmart.com, Jet, and more. If someone has searched for it, we’ve got it