What is White Van Speaker Scam?

Legal Definition
The white van speaker scam is a scam sales technique in which a con artist makes a buyer believe they are getting a good price on home entertainment products. Often a con artist will buy generic speakers worth around $40 and convince potential buyers that they are premium products worth over $2,000, offering them for sale at around $200. Con artists in this type of scam call themselves "speakerguys" or "speakermen", and usually claim to be working for a speaker delivery or installation company.

The speaker scam was common in the 1980s, and despite widespread information about the scam on consumer forums and watchdog sites, the scams continue operating across several continents.
-- Wikipedia