Amex Blue Cash Preferred gives 6% cash back on groceries.
Each friend can earn:
$250
back after they spend $3,000 in purchases on their new Blue Cash Preferred® Card in their first 6 months of Card Membership. They will receive $250 in the form of a statement credit. Your friend will be able to choose from all available American Express Personal and Business Card offers. No matter which Card they choose, you could earn a referral bonus.
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