In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Terra-cotta colored condensors
I assume black paint on coil fins is for better heat transfer (a little bit of coil cleaner will eat the paint, so I doubt it is for corrosion control). I know it’s only a 4% increase on the radiation side (I assume convection is dominant heat transfer mode). Besides being more visible, and possibly clashing with scenery, why not have terra-cotta colored fins on condensor coils? Has it ever been done?