Hi Melinda! Welcome to the Orchid Board!
You said your ebay purchase came with two plants? Are they attached? If so, this may be a "keiki" which is a baby plant. If they are attached, I would leave them be until the baby has roots that are a few inches (like maybe 4 or 5 inches) long. Then I would separate them with a sterilized cutting tool and treat the wound on the "momma" plant with some cinnamon.
Do you have a picture of your new ebay 'chid? Would love to see how it's looking! Good luck!