When starting an FBA you will need a few things to get started. One of the most important things you will need is the Amazon Seller App to scan for items when doing your retail arbitrage, with this app you check prices just by scanning and gives you estimates for selling as a merchant. An app that does a slightly better job than the Amazon Seller App but costs $15 / month is the Profit Bandit App with its preset filters to give you the profit/loss for a specific item.
