SellSync runs your Amazon store for you
Amazon rewards the seller who wins the Buy Box, keeps pricing sharp and ships on time, and punishes the one who slips on account health. Doing all of that by hand, especially across other channels, caps your growth. SellSync connects your account and runs pricing, inventory, fulfillment and support for you, on autopilot.
What SellSync does on your Amazon
Win the Buy Box automatically
SyncCortex tracks competitors in real time and adjusts your price to win the Buy Box without eating your margin.
FBA and fulfillment handled
SyncLog keeps FBA and seller-fulfilled orders organized, with shipping, tracking and delivery deadlines under control.
Sales tax reconciled
Amazon collects and remits sales tax for you. SyncTax reconciles what was collected, tracks your nexus and keeps your reporting clean.
Account health protected
SyncVox answers buyers fast and on brand, keeping your response time and metrics healthy.
Who runs your Amazon for you
SellSync's team of AI specialists, working this channel.
Frequently asked questions
Does SellSync help me win the Buy Box on Amazon?
Yes. SyncCortex tracks the competition in real time and adjusts your price to win the Buy Box without eating your margin. On Amazon, the Buy Box is what makes your offer the default purchase for a product, and a seller who loses it disappears from the buy button even with stock on hand. SyncCortex runs controlled price adjustments inside the margin floor you set, keeps what sells best, and respects the account-health metrics Amazon enforces, so you never fall into a race to the bottom or risk your account. Because it also keeps inventory synced across your channels, you do not lose the Buy Box to a stockout or take a cancellation, which Amazon penalizes on your seller account.
Does SellSync work with FBA?
Yes. SyncLog handles shipping, tracking and delivery deadlines with FBA (Fulfillment by Amazon) or your own fulfillment. When you use FBA, it keeps the stock in Amazon warehouses synced with the inventory on your other marketplaces, so the same item sells on Amazon, eBay and Walmart from a single shared pool, with no overselling and no cancellation for being out of stock. With seller-fulfilled orders, SyncLog generates the label, organizes dispatch and watches the deadline, warning you before anything ships late. Amazon is strict on on-time delivery metrics, so keeping fulfillment clean is what protects your account health and your standing in the Buy Box across the catalog.
How does SellSync handle sales tax on Amazon?
Amazon is a marketplace facilitator, which means it collects and remits sales tax on your marketplace orders for you in every US state that has a facilitator law, so you do not charge tax per order yourself. SyncTax handles what is still your job: it reconciles the tax Amazon collected against your orders, tracks where your sales and inventory create nexus, and keeps your records and reporting ready for your filings. There is no per-order tax document for you to issue on Amazon, unlike Brazil. If you also sell on your own website, SyncTax flags the states where you may need to register and collect directly. The result is clean tax records across channels without the manual reconciliation that trips up sellers at volume.
Can I run Amazon alongside other marketplaces?
Yes. SellSync runs Amazon next to eBay, Walmart, Etsy, TikTok Shop and your other channels from one platform, with inventory and pricing synced in real time. When a product sells on one channel, stock drops everywhere at the same moment, so you never oversell or take a cancellation for being out of stock, which hurts your account health and your reputation. SyncCortex adjusts price per channel against each one competition, SyncLog handles fulfillment and deadlines, and SyncVox answers buyers in your store voice. In practice, you operate several storefronts as if they were one, without multiplying the work each time you open a new marketplace, and you add channels without hiring more people.
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