The non-Zeiss glass Super-Rotators
used to be cheap, but now on eBay, they're close enough in price (~$800) that you should probably just go for a Canon TS-E instead, if you can afford it. The Macro lens you're looking at is one of the Zeiss-designed lenses, iirc.
OTOH,
the Arsat/Arax tilt-shifts are still relatively cheapish, and are nowhere near as fugly.
I've never put the 80 on tubes. I'm mostly shooting fountain pens with it, and haven't needed the close-up capability.