Amazon Japan's annual Prime Thanks Festival runs October 13-19, with early deals on October 13-15 and the main event October 16-19. Alongside Prime Day and Black Friday, it is one of the marketplace's three biggest sales events — and a period when logistics costs shift at the same time.
Two fee changes deserve immediate review. First, from October 15 through January 14, 2027, holiday peak fulfillment fees apply to FBA and multi-channel fulfillment (Amazon cites an average increase of about USD 0.32 per unit on the US store, with Japan applying peak fees in parallel). Second, since October 1, 2026, inventory aged over 365 days on the Japan store incurs an additional JPY 0.031 per cubic centimeter per month on top of the existing long-term storage fee (source: Amazon Japan Seller Central fee-change notice).
Inbound timing matters too. For this event, the FBA IXD (inbound cross-dock) cutoff was October 5 and the FC cutoff October 9. The next milestone is Black Friday/Cyber Monday — US deal submissions close October 20 — and fulfillment centers prioritize receiving in September-October, so early replenishment is the safer play.
Practical logistics advice: 1) use air or Japan express lines (reference transit 4-7 days) for urgent restocks and fast-sea or LCL (reference 10-18 days) for planned inventory, blending speed and cost; 2) move slow-moving SKUs to a Japan overseas warehouse or enable auto-removal to avoid compounding storage fees; 3) keep declared values consistent with listing prices in line with Japan's reverse-calculation customs valuation.
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