有没有办法确定我们是否是给定产品的“特色商家”？最好使用 MWS API 代替广告 API。
我知道这可以通过产品广告 API 实现，但在给定请求中您可以检查的最多产品是 10 个，并且该 API 的限制似乎有些严格（特别是如果您有 50,000 多个 ASIN）。
我们使用“重新定价”服务来处理此问题（但希望将该功能整合到我们自己的应用程序中来管理我们的产品），因此我知道可以及时获取大量产品的数据，但是我不知道怎么办。
旁白：
据我了解，由于大量滥用而没有任何实际销售，亚马逊收紧了广告 API。我认为可能有一种方法可以通过 MWS 来实现这一目标，而不受限制，因为 MWS 实际上为亚马逊赚钱。
Is there a way to determine if we are the (or a) "featured merchant" for a given product? Preferably with the MWS API vice the Advertising API.
I know this is doable via the Product Advertising API but the most products you can check in a given request is 10 and the throttling limits for that API seem somewhat strict (especially if you have 50,000+ ASINs).
We've used a "re-pricing" service to handle this (but would like to roll the functionality into our own application for managing our products) so I know it's possible to get the data for high volumes of products in a timely manner but I can't figure out how.
Aside:
As I understand it Amazon tightened down the Advertising API due to a lot of abuse without any real sales. I figured there might be a way to accomplish this via MWS without the restrictions given MWS actually makes Amazon money.
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评论（1）
很抱歉，无法使用 MWS API 获取此信息。 MWS API 没有任何相关信息，也就是说，它对其他卖家的商品一无所知，因此无法查看您的商品相对于其他商品的定价（其中是您确定是否拥有Buy Box 所需的信息）。
如您所知，您可以通过产品广告 API 获取此信息，但由于实施了新的限制，这对于您的库存规模可能不切实际（需要
三天两个半小时每<罢工>天小时 20,000 件商品）。您过去使用的“重新定价”服务很可能受到新限制的影响。但是，任何现有帐户都有宽限期来更改其软件。新的限制将于 2012 年 2 月 12 日对这些帐户生效。您唯一可以选择的其他选项是从网站获取信息（屏幕抓取）。由于延迟问题，这不是一个非常有吸引力的替代方案，但如果您有基础设施来执行大量并行调用，那么就可以使用它。在某些情况下，我更喜欢从网站获取此类信息，因为这是买家看到的信息（最新信息）。过去，我曾见过来自产品广告 API 的数据已过时或完全错误。
这些限制在文档中以“效率指南”的晦涩副标题定义，位于 此处（位于页面底部）。
我必须承认，自从我使用 PA-API 以来已经有一段时间了，并且已经忘记了这些限制。我以为每天有 2,000 个左右，但实际上每秒 1 个调用每小时就有 2,000 个。如果您拨打电话的速度太快，他们将返回 503 响应，该响应记录在 此处。
更新：亚马逊添加了产品 API 到 MWS API。
GetCompetitivePricingForSKU为您提供类似于产品广告 API 的 ItemLookup 函数的定价信息。有了这些信息，您应该能够确定Buy Box所有者的价格。I'm sorry to say that there is no way to get this info using the MWS API. The MWS API doesn't have any relative information, that is, it doesn't know anything about other sellers' items so there is no way to see what your items are priced at relative to others (which is the info you would need to determine if you own the Buy Box).
As you already know, you can get this info through the Product Advertising API but with the new limitations in place this may not be practical for the size of your inventory (would take
three daystwo and a half hours at 20,000 items perdayhour). The "re-pricing" service that you've used in the past was most likely affected by the new limitations. However, any existing accounts were given a grace period to change their software. The new limitations will go into effect for these accounts on February 12, 2012.The only other option open to you is to get the info from the site (screen scrape). This isn't a very attractive alternative due to the latency issues but if you've got the infrastructure to do massive amounts of parallel calls then go for it. In certain situations I prefer to get this type of info from the site since this is what the buyers are seeing (most current info). In the past I've seen data coming from the Product Advertising API that was out of date or just plain wrong.
The limits are defined in the documentation under the obscure subtitle of "Efficiency Guidelines" and is located here (at the bottom of the page).
I must admit that it's been a while since I had worked with the PA-API and had forgotten the limits. I thought it was something like 2,000 a day but it's actually 2,000 per hour at one call per second. If you're making calls too quickly they'll return a 503 response which is documented here.
Update: Amazon has added a Products API to the MWS APIs. The
GetCompetitivePricingForSKUgives you pricing information similar to the Product Advertising API's ItemLookup function. With this information you should be able to determine the price of the Buy Box owner.