<value><string>A per unit base price applying to the products whose quantity is in slice. This per unit base price will be weighted with the per unit base price of other slices.\n
\n
This property is useful for the following case :\n
0-10 products cost 10$, and 11-inf products cost 9$. Thus in a command of 15 products, the unit base price is 9.6667$, as 10 * 10 + 5 * 9 = 145, and 145 / 15 = 9.6667</string></value>