Signature Polish review for Zonos Duty and Tax

I agree with the previous review. The app is supposed to give International customers a heads up into Duties/Taxes and make it easier for them to pay. Unfortunately, I'm losing more International orders than gaining because of the extra Zonos fees and Brokerage fees I could otherwise discount or rid of if I were allowed to use my UPS pricing agreement and a second account number. International is expensive as it is. Tagging on Zonos Fees and exxagerating to cover the spread is not generating more business. Not worth $99 in new orders after more than two months.