Supplier A is very reliable. The company has never encountered any availability issues or quality complaints with this supplier. Betty wants to explore the option of buying at least $50\%$ of each of the three components from Supplier A and evaluate the impact of this decision on the total procurement cost. Note that Betty can't purchase half a component. When calculating the above$-$mentioned $50\%$ round the corresponding value to the nearest integer.

What would be the minimum purchasing cost in this scenario?