There are several factors to consider that are not easily answered. Shopping around for an ultrasound technician is a good idea. Check out their ease of scheduling. Some technicians supply all results at the time of measurement, while others interpret images and analyze results in their laboratory at home then mail you results. Many factors affect your decision in ultrasound technicians.
Most technicians charge a fee per animal.
Some charge one fee for ribeye area and fat thickness and an additional fee for marbling scores. Travel expenses and set up charges are typically in addition to the per animal charges. There may be many breeders in your area who would coordinate with you to collect ultrasound data. With more breeders, ultrasound technician travel and set up expenses will decrease. You can simply schedule ultrasound data collection with neighbors to reduce costs.