Shopify has markets. Amazon has marketplaces. Settings > Markets is where you tell Amazon Seller Sync how the two line up, so the app knows which Amazon price belongs to which of your shoppers.

There are two separate things on this tab, and they do different jobs. It is worth being clear about which one you are setting.

1. The default (home) marketplace

The default (home) marketplace is the Amazon marketplace that Amazon Seller Sync treats as your primary one. It is used for two things:

• Automated price sync. Every scheduled run fetches the lowest New offer price for your mapped products in the home marketplace.
• The home price. This is the Amazon price stored against the variant as the main figure, and it is what the storefront Amazon Price block falls back to.

Every plan can set a default marketplace, including Free. If you sell in one country, this single setting is all you need on this tab.

Pick the marketplace where you do most of your Amazon business. If you are a UK seller, that is Amazon in the UK. If you are a US seller, that is Amazon in the United States. Only marketplaces that your connected account is authorised for appear in the list.

2. Per-market overrides

A per-market override maps one individual Shopify market to one specific Amazon marketplace.

Say your Shopify store has a Germany market. Without an override, a German shopper sees the Amazon price from your home marketplace, which might be the UK, in pounds. That is not much use to them. Map the Shopify Germany market to Amazon in Germany, and price sync will fetch the German Amazon price too, in euros, and German shoppers will see that instead.

Every marketplace you map is added to the set of marketplaces the price sync fetches. The results are stored per market on the variant, so the storefront blocks can pick the right one for the shopper in front of them.

Use an override when a Shopify market has real customers and there is a matching Amazon storefront in their country. Do not map markets you do not actually sell into, because every mapping adds work to each sync run and consumes one of your allowance.

What each plan allows

The number of per-market overrides you can save comes from your plan.

Warning

The Free plan gets zero overrides. Not one. On Free, the per-market selectors on this tab are rendered but disabled, and you cannot save a mapping. This is not a bug. Free gives you the default (home) marketplace and nothing more. To map even a single Shopify market to a second Amazon marketplace, you need Growth or above.

The usage line and the cap

Underneath the overrides you will see a usage line showing how many market mappings you have used against how many your plan allows, for example three of ten.

When you reach the cap, the app stops you adding another. Existing mappings keep working exactly as before, nothing is removed and nothing silently stops syncing. You just cannot add an eleventh mapping on Growth + Markets until you either remove one you no longer need or move up to Full.

If the markets you care about have shifted, the fix is usually to remove a mapping you no longer sell into and reuse the slot rather than to upgrade. Removing a mapping stops the app fetching that marketplace's price on the next run, and it does nothing at all on Amazon. If you are consistently pressed against the cap, that is the signal to look at Plans and billing.

The setup checklist gotcha

This is the single most common source of confusion on this tab.

Step 3 of the Finish setting up checklist on the Dashboard is Choose your marketplaces. That step only counts as done when you explicitly save a mapping on this tab.

When you connect an Amazon account, the app can infer a sensible default marketplace from what that account is authorised for. That inferred default is genuinely used, and price sync works with it. But an inferred default is not a saved choice, so the checklist step stays open and the Dashboard keeps telling you that setup is incomplete even though the app appears to be working.

The fix takes ten seconds. Open Settings > Markets, confirm the default (home) marketplace is the one you want, and save it. The checklist step turns green. On a paid plan you can add any per-market overrides at the same time.

Tip

If your Dashboard setup guide is stuck on Choose your marketplaces and everything else looks fine, you have almost certainly never pressed save on this tab. Go and press it.

How mappings show up elsewhere

• Price sync fetches the lowest New offer for the home marketplace plus every mapped marketplace, and writes the per market prices and links onto the variant. This runs on all plans, including Free, at your plan's sync interval, and on demand via Sync now on the Dashboard.
• The storefront blocks read those per market values. The Amazon Price block shows the price for the shopper's market, and can be set to show only in the home market. The Buy on Amazon button falls back to the synced Amazon link for the shopper's market.
• Product Sync has its own separate marketplace selector, Marketplaces to publish to. Publishing a listing to a marketplace is a different decision from mapping a Shopify market to it. Do not assume one implies the other.

Related pages

• Amazon accounts, regions and marketplaces
• Supported Amazon marketplaces
• Product mapping
• Buy on Amazon button