Just an update, talked to IceCap today, they do not refurbish the fans.

Thought it was a little strange, but I trusted the source that told me they did.
The radio shack fans are cheaper by far, but don't have the multi-speed capability. They are always running full speed, even at night when the heat in the canopy isn't very high. It'll work your heater harder in the cool months of the year...but if you have a good heater, shouldn't be an issue.