Product review (5 stars): Easy. Do it yourself.
Great, heavy duty rubber coupler. Although the rubber is not usually the piece to break. The weakness in this part lies in the plastic parts. My original (all plastic) lasted for over 10 years. The replacements are a metal receptacle with moulded plastic. They are still in service with 2-3 loads per day for a few weeks now without issue.
Replacement is relatively easy. Tip unit. Remove motor (2 clips and screws). Replace and bring upright. With minor technical ability you can save yourself some $$$. When I was in there I replaced the clutch also. That's its own beast.