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Samsung pay has a promotion for its user for 20% off select gift cards, the southwest one was the most interesting for me. I think 10% off Southwest gift cards were FP before.
Open Samsung pay, you will see the direction to use the promotion.
200$ in purchase max (Daily till 8th of may)
Disclaimer: Already there was a thread for the promotion (http://slickdeals.net/f/8692787-samsung-pay-mother-s-day-promotion-20-select-gift-cards?src=SiteS