The PIC will bill all experiment related costs to the sponsoring institution through IRIS headquarters. The PI should contact IRIS to arrange a suitable payment scheme. Costs include shipping, special hardware purchased by the PIC for an experiment, and travel expenses of IRIS personnel. In this case an agreeable apportionment is established between the PI's involved and IRIS handles the billing. Shopping around for prices can help but what really counts is delivery.
Air cargo has a few different categories.
Next you learn that Freight bills cannot be disputed until paid. Once Lamont or whoever has paid the freight company the bill can then be reviewed for errrors or charging for one class of service and receiving another.