Shipping options can be complex and costly for eCommerce businesses, with Amazon spending over 12% of its revenue on shipping in 2017. To find the best shipping rates, various tools such as Parcel Monkey, Secureship, ShipGooder, eBay Shipping Calculator, FitShipper, and paid shipping services like ShipStation and ShippingEasy can be used to compare prices and find the cheapest option for each order. These tools can integrate with eCommerce platforms to automatically calculate shipping costs and print shipping labels, saving time and money on shipping. Additionally, comparing rates from different carriers such as USPS, FedEx, and DHL can also help businesses find the most economical shipping options.