There is a $3500.00 deposit. This covers the cost of materials, valve sets and bells. I consider this an agreement that the customer is serious about the building, and purchase of a horn. There is a one week period in which, at this time, the order can be cancelled, and deposit will be returned. After this one week period, there is no refund of the deposit. Balance of purchase price is due at time of delivery or pick up of the horn. There is no trial period. There is a thirty day time period in which adjustments, or further customization will be made. Everything that can be done to make this the best horn available to the buyer will be done during this time. After thirty days I will continue to work with the buyer, but all work will be charged at my shop rate. There is a no return policy. The ordering and purchasing of a custom made horn is not the same as trying or purchasing a horn from a music store or an individual.