Inventory planning is a two-sided bet, and most tools only warn you about one side. SellerOS prices both failure modes — then plans your reorders from real velocity, real lead times and real storage costs.
A reorder date is only as good as its inputs. The planning chain accounts for:
Reorder dates and quantities computed from velocity and lead time per SKU, with live FBA on-hand quantities when your Amazon account is connected — and a what-if calculator to stress-test the assumptions.
A stockout isn't just missed sales — it's rank you pay to win back. The engine prices both the days you're dark and the recovery drag after restock, so safety stock stops being a gut call.
Keep paying storage, liquidate, remove or dispose? The decision engine ranks all four by net cash recovered and tells you plainly when even the best option books a loss.
Carton counts, total weight and cube, dimensional weight — with warnings before you pack a box Amazon will reject: sides over 25 inches, 50-pound team-lift thresholds.
EOQ balances ordering cost against holding cost; the price-break optimizer prices supplier tiers at their true cost including the capital they tie up — bigger discounts aren't always cheaper.
How many days each dollar stays locked in inventory before Amazon pays it back — and what shortening that cycle by a week frees up for your next order.
From your real order history via Amazon's official Selling Partner API, with live FBA on-hand, inbound and reserved quantities overlaid once your account is connected. Before you connect, every tool runs on realistic demo data so you can evaluate the workflow first.
Yes — the storage-fee calculator models Amazon's seasonal Q4 rates and aged-inventory surcharges, and the aged-inventory engine uses those carrying costs when it ranks keep vs. liquidate vs. remove.
EOQ gives you the economically ideal order size; real constraints like MOQs and container sizes sit on top. The point is knowing how far a constraint pushes you from the optimum — and the price-break optimizer tells you what a bigger tier really costs once holding cost is priced in.
The restock planner shows days-of-supply and reorder dates per SKU, and real-time alerts flag stockout risk as it develops — you're not waiting for a weekly report to find out you went dark on Tuesday.
The demo catalog ships with velocity, lead times and stock levels — open the restock planner and see which SKU goes dark first.
14-day free trial · Cancel anytime · We never see your Seller Central password