This is going to be expensive. A camshaft swap is going to be north of 10 hours. 2.5 million hours at $120.According to the company, a manufacturing error with the engine crankshaft could cause the connecting rod bearing in affected engines to prematurely wear and seize.
The bigger challenge; most dealers don't have the bandwidth to handle a project of this magnitude. Spread out equally across the 1072 dealers, that's 2450 camshaft replacements per dealer or 24,500 hours of work. That's 12 full time techs (Honda trained) per dealer working for an entire year. My dealer employs 5.