Here’s how the The Plum Card® from American Express OPEN works. Get a 1.5% discount on the portion of your eligible purchase balance that you pay within 10 days of your statement closing date, as long as you pay at least your Minimum Payment Due. Then get up to 2% back ($600) in additional statement credits. The 2% back will appear as three $200 credits. To be eligible to earn each statement credit, you must charge $10,000 in eligible purchases* during the first 3 months of membership on an eligible Plum Card from American Express OPEN, beginning on the date your account is approved. This adds up to a great 3.5% cash back in the first three months, which for a $30,000 spend, equals $1,050.
https://www.americanexpress.com/us/small-business/credit-cards/plum/