“Commission merchant” means any person, as follows:

1. (a) Who receives on consignment or solicits any farm product from a licensee or producer of the product.
2. (b) Who accepts any farm product in trust from a licensee or the producer of the product for purposes of sale.
3. (c) Who sells any farm product on commission.
4. (d) Who handles any farm product in any way for the account of or as an agent of the consignor of the product. Any person who accepts a farm product from a licensee or the producer of such product for the purpose of sale or resale is a commission merchant, unless the person has bought, or agreed to buy, the farm product by a contract which designates the price to be paid to the seller.