Klarna is synonymous with the "buy now, pay later" trend of making a purchase and deferring payment until the end of the month or paying over interest-free monthly installments.Online lender Klarna priced its IPO at $40 per share on Tuesday, above its expected range, in a deal that values the Swedish company at about$15 billion.Klarna, known for its popular buy now, pay later products, said it raised $1.37 billion for the company and existing shareholders, who are looking to exit a portion of their long-he ...