People can't give you free labor. If I can find an agent in this city, I will buy it. On the one hand, the price is open for business after all, and quality and after-sales are more important. If there is something wrong with the equipment, I can directly solve it with him. The nearest merchant may take some profits from you, but he will be responsible for your after-sales, saving you and the school a lot of trouble and purchasing for the unit.