Previewing the NL trade market 

July, 4, 2012
7/04/12
8:50
AM ET

Cole HamelsMiles Kennedy/Getty ImagesThe Phillies could soon put Cole Hamels on the trading block.
Anybody who has bought something in an airport knows there is a captive customer markup. The kid sitting next to you on the plane spilled his chocolate milk all over you, and as you wait for your connection, there's only one store where you can find another shirt -- and the prices are designed to gouge. There is just one or two restaurants, one place to buy electronics, one place to buy a book, and if you want to get anything, you will pay.