replacement headlights for 1997 E

[rimini]

I have a problem with a frosting up of the inner surface of all 4 lenses on my E. I have looked at a numbr of replacement unit projector beam lights. E.g., on ebay motors. They all look pretty decent and assure that they fit w/o major heartburn. Does anyone have any experience with these replacement units? Can someone give me an extimate of the difficulty and total time for replacing the old headlights? Thanks very much.