Amen, I think the issue Marx and modern socialists have is seeing the phenomena and interpreting it as a necessary existent in and of itself. Instead of understanding it as an emergent phenomena explained by another mechanism. Prices emerge from social action and all action assumes preference for one thing over another. Prices are not value. Prices emerge because of valuation and evaluation.
If I were to divide those terms and understand them as slightly different it would look like this. Valuation might be the consideration I perform as a mental activity of how I might use some “thing” in reality as a means to an end. The value of the thing would be in some way (not quantifiable in scientific terms) related to my desire for that specific end which I’m considering it for. Evaluation would be the comparison of two valuation results.
So, with money prices within the context of a business or a family budget, or any other “accounting/budgeting” process. We would perform valuation and evaluation processes by using prices as a means of comparing the relative costs of differnt goods, services, etc. However, the pure numbers in the accounting unit aren’t sufficient to produce a decision on action.
Just because it might be cheaper to go on one vacation experience than another isn’t a reason to forego the trip to Aruba, in favor of the trip to the local campground with a tent. The budget might inform me of how much money, I’ve chosen to set aside for such an activity. I can arrange for the trip to Aruba, but I have to decide how to pay for it, and in looking for additional money to pay for it, I have to decide if my desire for the trip to Aruba is sufficiently high to warrant giving up other activities I’ve budgeted : dinners, movies, fast food, saving for college, the new car, etc.
It’s not money to money. It’s money to money in the pursuit of end vs. end.
Even the profit made by a specific business is not an end in and of itself. The goal of a business is to make money. But not to make money as an ultimate end. A human being (or multiple human beings) wants the money to some other personal end.