美國 Sam's Club 就是Walmart略高檔的子品牌
台灣沒有，但中國有，有剛需可上。
不同會員等級（像Costco一樣)給予不同里數優惠
Earn American Airlines AAdvantage® miles when you join Sam's Club.
It's a win.
Sam's Club Savings or Business ($45 cost)
1,500 miles for AAdvantage®
2,000 miles for AAdvantage® Gold & Platinum
2,500 miles for AAdvantage® Platinum Pro, Executive Platinum & Concierge Key
Sam's Club Plus ($100 cost)
3,000 miles for AAdvantage®
4,000 miles for AAdvantage® Gold & Platinum
5,000 miles for AAdvantage® Platinum Pro, Executive Platinum & Concierge Key
https://www.samsclub.com/sams/html/aalanding.html?pid=AApageheader