The phrase "Who will buy Oliver?" is closely associated with the musical "Oliver!"—an adaptation of Charles Dickens' novel Oliver Twist. In the musical, "Who Will Buy?" is a popular song sung by various street vendors in London as they try to sell their goods. The character Oliver Twist is an orphan who becomes involved with these vendors and street urchins. The phrase does not refer to any commercial or literal sale of a person but is rather part of the musical's storyline symbolizing Oliver's search for a home and family. The musical "Oliver!" and its song "Who Will Buy?" have been performed in various adaptations and remain enduring cultural works.

Therefore, the answer to "Who will buy Oliver?" is metaphorical: no one literally buys Oliver; instead, it reflects his quest for belonging and care within the story's context. The title "Who Will Buy?" is a theatrical number highlighting the working-class vendors in the story, not a real transaction involving Oliver. If you were asking about an actual sale or business transaction related to an entity named Oliver, no current relevant data was found. The known prominent association is with the musical and novel mentioned above.