Key legal question
Whether the term 'abschlusswilliger Kaufinteressent' in the brokerage agreement includes a buyer willing only to buy subject to different payment terms than those offered by the seller.
Extracted holding
No. A buyer is only 'abschlusswillig' if willing to conclude the offered purchase contract on the seller's terms; refusal of a material sales condition means no commission trigger under the clause.
Extracted reasoning
Text, purpose, and structure of the commission clause show that the broker earns the fee either upon actual conclusion or when the seller refuses to sell despite a buyer ready to accept the offered terms. A buyer rejecting a sales condition is not ready to conclude the offered contract.