Under the Storage Fees section what is $79.68? Is that the fee for all inventory items? Either way, the math doesn’t add up. 408 x 0.18 = 73.44 OR 428 x .18 = 77.04.
When looking at 1 item’s Fees, the chart show the Actual charged amounts from previous months, whereas the projected upcoming charge is in the top 2 boxes. We need to fabricate the projected amounts into the same chart with the actual charges somehow so that it becomes easier to see. so, from that screenshot above, your total storage fee for Jan 2019 for that item will be: $33.91 + $0 + $0 = $33.91 as of today IF stock level stay the same. When you sell more, or checkin more, the estimated fee will fluctuate.