In many areas of the US, where officials have finally caught on, white van sales are illegal.
The typical "criminal" charge is "theft by deception". It ties in with the comment that valuations need to have a basis in reality. Giving speakers a list price of $3,000, when none of them actually sell for anywhere near that, qualifies. In convincing someone that the retail price is $3,000, so that you can convince them they are getting a deal, you are using deception. When you make claims related to specifications (in the glossy brochures) that are false you are using deception. [Personally, I think this is why Bose dropped any semblance of audio specifications from their literature and web site]. And you know that even when the scammers hook someone for a large amount that transaction is never reported to state or federal tax officials. So the scammers can't use prior sales (ripoffs) as a basis for value.
The "civil" charges for white van sales run the gamut from selling without proper licenses (since it actually is a business for those involved) to different levels of tax fraud (ranging from sales tax evasion to income and employee tax evasion).