Is a manufactured product considered "shipped" once it has been paid in full, even though the customer s taking advantage of on site free storage?

As a general matter, if the parties have agreed that "shipment" is a condition to payment, then that is their deal, and a court could well find that there is no commission due until the merchandise leaves the seller's plant. Generally, a "sale" is deemed to take place when the risk of loss passes to the buyer; if the seller continues to bear the risk of loss because the parts are being stored at the seller's plant and at the seller's risk, even though the buyer has paid in full, that would be an additional factor to be taken into account in deferring payment of the commission. An attorney could review the precise terms of your agreement and assist you in determining whether and to what extent you might make an argument that the intention of the parties with otherwise. Without reviewing the detailed terms of the agreement, it is difficult to predict an outcome. Generally speaking, the terms of a written agreement will control the outcome.