アマゾンのフォーラムで、「今年に入ってカート獲得率のアルゴリズムが変わりましたか？」というスレッドが立っています。同一条件のFBA競合同士で、獲得率が100％と0％といった状態が継続されているということです。実際、私どものカートも0％になってしまい、まったく在庫が動かなくなっているものが結構出ています。こちらが0％になった商品については、ちょっとだけ価格を下げたり、ポイント1％だけつけたりすると、逆転してこちらが、100％になるのですが、競合店がそれに合わせてくると、また、競合店が100％になります（2件のみ確認）。同じ原因かどうかわかりませんが、この現象は、去年も時々あったような気がします。在庫のはけるのが早くなっているので、注意してみると、ある程度の期間、私どものカート獲得が100％になり、競合店が0％になっているという現象です。現時点では、原因、状況など、明瞭ではないと思いますが、今後、情報や対策など出てくれば、と思い、投稿いたします。

ECマスターズの塚本です。＞現時点では、原因、状況など、明瞭ではないと思いますが、＞今後、情報や対策など出てくれば、と思い、投稿いたします。下記の投稿にあるようにアルゴリズムの変更などはなく、カートボックス獲得率の変化はライバルの状況の変化などによるものだと思います。 https://ec-masters.club/forum/post_view.php?id=2209 カートボックス獲得には、金額(送料も含めた）、納期、購入者の評価の３点が大きく影響しています。基本的にはカートボックスの獲得の要件はルールが明確化されていますのでご確認いただければと思います。 https://www.amazon.co.jp/gp/help/customer/display.html/?ie=UTF8&nodeId=200505830

アマゾンFBAカート獲得のアルゴリズムについて

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Cake\Error\ErrorTrap->handleError() /home/ec-masters/forum-cakephp/src/Controller/ForumController.php, line 141
App\Controller\ForumController->view() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Controller/Controller.php, line 503
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Cake\Controller\ControllerFactory->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Controller/ControllerFactory.php, line 141
Cake\Controller\ControllerFactory->invoke() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/BaseApplication.php, line 362
Cake\Http\BaseApplication->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 86
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Middleware/CsrfProtectionMiddleware.php, line 159
Cake\Http\Middleware\CsrfProtectionMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Middleware/BodyParserMiddleware.php, line 157
Cake\Http\Middleware\BodyParserMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Routing/Middleware/RoutingMiddleware.php, line 118
Cake\Routing\Middleware\RoutingMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Routing/Middleware/AssetMiddleware.php, line 71
Cake\Routing\Middleware\AssetMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/src/Middleware/HostHeaderMiddleware.php, line 35
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Cake\Http\Runner->run() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Server.php, line 98
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        $dispatchStaff = [];
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Cake\Error\ErrorTrap->handleError() /home/ec-masters/forum-cakephp/src/Controller/ForumController.php, line 250
App\Controller\ForumController->view() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Controller/Controller.php, line 503
Cake\Controller\Controller->invokeAction() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Controller/ControllerFactory.php, line 166
Cake\Controller\ControllerFactory->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Controller/ControllerFactory.php, line 141
Cake\Controller\ControllerFactory->invoke() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/BaseApplication.php, line 362
Cake\Http\BaseApplication->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 86
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Middleware/CsrfProtectionMiddleware.php, line 159
Cake\Http\Middleware\CsrfProtectionMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Middleware/BodyParserMiddleware.php, line 157
Cake\Http\Middleware\BodyParserMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Routing/Middleware/RoutingMiddleware.php, line 118
Cake\Routing\Middleware\RoutingMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Routing/Middleware/AssetMiddleware.php, line 71
Cake\Routing\Middleware\AssetMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/src/Middleware/HostHeaderMiddleware.php, line 35
App\Middleware\HostHeaderMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Error/Middleware/ErrorHandlerMiddleware.php, line 115
Cake\Error\Middleware\ErrorHandlerMiddleware->process() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
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            $message = "Unable to emit headers. Headers sent in file={$file} line={$line}";
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Cake\Http\ResponseEmitter->emit() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Server.php, line 142
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        $reasonPhrase = $response->getReasonPhrase();
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Cake\Error\ErrorTrap->handleError() [internal], line ??
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Cake\Http\ResponseEmitter->emitStatusLine() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 68
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Cake\Error\ErrorTrap->handleError() [internal], line ??
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Cake\Http\ResponseEmitter->emitHeaders() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 69
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Cake\Error\ErrorTrap->handleError() [internal], line ??
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Cake\Http\ResponseEmitter->setCookie() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 212
Cake\Http\ResponseEmitter->emitCookies() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 200
Cake\Http\ResponseEmitter->emitHeaders() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 69
Cake\Http\ResponseEmitter->emit() /home/ec-masters/forum-cakephp/vendor/cakephp/cakephp/src/Http/Server.php, line 142
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