Which product holds the Guinness World Record for the most expensive consumer item ever sold at retail (not at auction)?

The Guinness World Records has documented extraordinary achievements across all aspects of life, including consumer products that have shattered price barriers. This trivia poll tests your knowledge about record-breaking retail products that made headlines not for their functionality, but for their astronomical price tags. Do you know which product holds the official world record for the highest price ever paid for a single consumer item at retail?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The Graff Pink Diamond Watch ($55 million)
History Supreme Yacht ($4.8 billion)
Antilia Smartphone ($17 million)
L'Incomparable Diamond Necklace ($125 million)