The fan itself is around $125 or so on-line. Replacement is very basic, but requires some patience as some of the little nuts and bolts are hard to get at. Also the plastic anchors that retain the plastic shroud will be old and brittle and need to be replaced with new ones. I've had two different fans fail on two different 300E's.

Given the temperatures that can be reached in North Carolina, I don't think it is smart to try and get by with one flaky auxilliary fan.

Steve