.What I would say is that the base cost means it is not something you use as part of a mix-and-Match approach. TBH, I don’t see why anyone would convert a 3RO loco to DCC, or go DCC in 3RO.
In DCC you are modeling accurate function and sounds. You can’t do this in the current O scale market. If you aren’t doing this with DCC you aren’t using DCC to fullest.
DCC has been in the 3 rail O gauge market and has been for a long time. It was called DCS. The o scale consumer blinded by what it actually is a in house built system because Mike had to have his own system.
With the death of MTH and hopefully DCS upon us. Maybe it will become a proper open source DCC system built around O 3 rail environment and needs. Instead of the clunky, proprietary DCC system it is now. Bridging what 90% of the model train market already is...DCC....