ERP consulting fees are influenced by the complexity of the ERP system, size of the company, the experience of the consulting firm, implementation strategy, deployment method, number of users, customization, training/customer support, and hardware/infrastructure requirements. These factors all play a role in determining the cost of the consulting services. The complexity of the ERP system, the size of the company, and the experience of the consulting firm are the most important factors. Implementation strategy, deployment method, number of users, customization, training/customer support, and hardware/infrastructure requirements all add to the implementation strategy.