I have around 30 case packs of my product that are 9” x 1.5” x 5.5” and didn’t want to go out and buy boxes that would equal out to a placement fee.
The key requirement is that you must send at least five identical boxes with the same weight, dimensions, and contents to be eligible for standard placement without extra fees. Since you have 30 case packs of your product measuring 9 x 1.5 x 5.5 inches, the best approach is to ensure that you pack them into at least five identical master cartons that meet Amazon’s standard box requirements, which include a maximum of 25 inches on any side unless approved and under 50 pounds.