Why have one baby when you can have 2? People are paying $500,000 to hire 2 surrogates at once and have 'twiblings'

Getty Images; Jenny Chang-Rodriguez/BI

• Some people are hiring two surrogates at the same time to carry their babies.
• Concurrent surrogacy can be complicated and costly, with prices reaching up to $500,000 or more.
• Many people who do it are in their 40s and trying to build out their family quickly.

Bill Houghton still vividly remembers the moment he met his son.

He was sitting in the hospital waiting room, right outside the birthing room, when a nurse appeared carrying a little green bundle.