For those buying or leasing goods from another to start a business, take a look at Indiana's Business Opportunity Transactions Act. The statute came to my attention when I found online a complaint filed by Indiana's Attorney General. The complaint is to be found here.
I have taken the liberty of quoting the most pertinent parts of the definition for "Business opportunity":
Businesses can face felony charges, a civil suit, an action by the Attorney General or all of the above.(1) involves the sale or lease or offer to sell or lease any goods or services to an investor that are to be used by the investor in beginning or operating a business;
(2) involves an initial payment by the investor of more than five hundred dollars ($500) and an initial cash payment of less than fifty thousand dollars ($50,000); and
(3) involves a solicitation of investors in which the seller represents that:(A) the investor may or will earn an amount in excess of the initial payment as a result of the investment;
(B) a market exists for any goods to be made or services to be rendered by the investor;
(C) the seller may buy from the investor any goods to be made or services to be rendered by the investor;
(D) the seller or a person referred by the seller to the investor may or will sell, lease, or distribute the goods made or services rendered by the investor; or
(E) the seller may or will pay to the investor the difference between the initial payment and the investor's earnings from the investment.