msrp isn't that different really... the t and c also got bigger rebates. usually a couple k more that made up most of the difference.
the vehciles themselves weren't much different. most common comparison is a grand caravan crew plus vs a town and country touring-l. nearly the same car. t&c had second row window shades, heated seats in the stow and go, sometimes the power fold third row. if you went to a limited, you would find nicer leather, more chrome, HID lights, sunroof...
depending on the year, you also found the 4L engine in more t&cs... if its 2011 or newer, same engine all around (3.6l)