We talk about trade values all the time on the site, usually focusing on the value of major league players who could be options for the Pirates. The values of the prospects in the system are pretty static and easy to come up with. They are usually based on whether the prospect is a top 100 guy, or whether he is rated as a Grade B or C prospect. The top 100 rankings are usually based off Baseball America, while John Sickels is usually the source for Grade B/C rankings.

We use our updated trade values for guys in the top 100, and Victor Wang's research for the values of Grade B/C prospects. I usually mention examples of prospect values in articles, but I figured it would be good to have a complete list. Before we get to which prospects belong in which list, I wanted to add a disclaimer. T...

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