The upper limit of the price is the value you derive. The upper limit of a bankers wage is very high. The upper limit for a teacher less so. Hence price is not

The upper limit of the price is the value you derive. The upper limit of a bankers wage is very high. The upper limit for a teacher less so. Hence price is not value as you correctly say. But it does tell you something about value. At least the free market sense of value.