Seller-stated means unverified
Airframe hours, engine time, and damage history on a public listing were typed by the seller or the seller's broker. VoloMarket says so on its own pages, and Vinto repeats the warning. Nothing on a discovery card is an airworthiness statement.
A pre-purchase inspection by a shop that does not report to the seller is the ordinary next step. Logbooks, Form 337s, and the status of airworthiness directives are their work, not ours.
Who may be paid when it closes
The FAA does not hand out an aircraft-broker license. That is not the same sentence as 'any introduction fee is fine in every state.' Some states regulate brokers generally. Vinto keeps a config list for places where a sale-contingent aircraft fee should be refused. It ships empty, and it should not stay empty on a guess.
The company that sells the aircraft is the one that structures the transaction. Vinto shows the listing and the source.
Management comes after the keys
Crew, hangar, and a management company are services with their own contracts. The services section can introduce one. It does not put Vinto on the insurance policy.