Square anounced Sunday that it's buying Afterpay for $29 billion. A customer uses a Square Inc. device to make a payment in San Francisco, California, on March 27, 2018.
Mandatory Credit:	David Paul Morris/Bloomberg via Getty Images

Square anounced Sunday that it's buying Afterpay for $29 billion. A customer uses a Square Inc. device to make a payment in San Francisco, California, on March 27, 2018.
Mandatory Credit: David Paul Morris/Bloomberg via Getty Images

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'Buy now, pay later' is becoming a huge business

Want to buy a new coat without shelling out the entire cost upfront? For shoppers, that's becoming an increasingly popular payment option — generating a windfall for the handful of companies that facilitate such services.