關于eligibility：
?
第一、是review的星級，也就是所謂的rating，rating雖然沒有給出很明確的數據4以上是要的。
?
第二，那就是需要FBA配送了，非FBA配送能夠入選推薦的情況幾乎不可能。?
?
第三，就是產品的主圖問題，產品的主圖必須是白底。

lightning?deal是秒殺（限時特價），因為具有時效性，所以最好盡快完成訂單。
當秒殺可行的時候，你會看到：
1.?可以進行秒殺的商品
2.?會有一個狀態欄，顯示（在買家的購物車里、未完成的或者已完成的）交易的百分比
3.?還會有一個計時器，顯示過了多長時間（從“你把秒殺的商品加入購物車”和“提出了一個促銷價”這兩件事算起）
4.?如果你的提出的促銷價被接受了，那么你會看到一個“add?to?cart（加入購物車）”的按鈕
注意：如果別人提出的促銷價被接受了（而你的不行），那么你會看到一個“join?waitlist（加入候補名單）”。
?

申請lightning deals 可以在后臺菜單欄目advertising 項下drop-down menu 里面有一個lightning deals的選項，點進去就可以了

有相關的Lightning Deal Terms & Conditions可以蠻了解下
Lightning Deal promotional discounts (Lightning Deals) are short-time offers of items that may be deeply discounted and of limited availability.
Lightning Deals may only be applied to one unit of each product (unless otherwise stated).
Each Lightning Deal is subject to two time restrictions. The first restriction is for the overall Lightning Deal and is displayed with the specific Lightning Deal. The item must be added to the Cart before this time expires. The second restriction applies after a Lightning Deal item has been placed in the Cart and expires after?a very limited time?. Orders must be placed before the expiration of both time periods.
If all Lightning Deals have been claimed but not purchased and the offer has not expired, a limited number of customers may join a waitlist for a chance to purchase an item at a Lightning Deal discount. For more details see Join a Lightning Deal Waitlist. The waitlist will be active either until the Lightning Deal has sold out, the allocated waitlist places have been filled, or by 23:59 GMT on the promotion day.
A Lighting Deal must be redeemed by checking out through clicking the "Proceed to Checkout" button from your Shopping Cart. Using 1-Click to check out will prevent the Lightning Deal from applying to your purchase.
Lightning Deals appear under your promotional balance on the "Select a payment method" page.
Offer good while supplies last. A limited quantity of Lightning Deals are available per item. If supplies are still available after all of the Lightning Deals have been used, customers may purchase the item at its regular Amazon price.
Lightning Deals are nontransferable, not for resale, and not redeemable for cash.
Lightning Deals are good only for specific products featured..
Lightning Deals do not apply to shipping and handling or taxes.
If you return a product purchased using a Lightning Deal, your refund will equal the amount you paid for the product, subject to applicable refund policies.