What is the competition charging?
Here in CA it is $.49 per kWh. At a 50 kWh CHAdeMO station.
In California North of Bakersfield at least, I was getting $0.20/kWh as a member of one of the major Chademo networks, and approximately $0.25/kWh at many of its main competition Chademo stations, for 30kW-42kW speed, last year December 2016 - June 2017. Of course, I could have picked more expensive stalls where the sky was the limit, but that wasn't what I was doing, and I was doing fine finding many reasonably priced Chademo stations.
The recent SuperCharger expansion would have removed my need to use most of those competitions' charger systems (had I not sold my Tesla). But, the Chademo networks have also been lowering their prices to some degree as well as continual expansion, and now with the raising of the SuperCharger prices, it puts them about par for price conscious Chademo adapter equipped Tesla owners that can wait the extra amount of time because half the charging speed. While it's rare that this is necessary given the good SuperCharger expansion, it still fills in some spots, and could be useful for some regular long distance routes that some drivers use. I have to admit that there's only three Chademo stations I can think of that would benefit me given the recent SuperCharger expansion, but all three are closer to my usual long distance endpoints than any SuperChargers, and half of them are useful places to stop.
(Yes, I can count. 1 is 100% useful for stopping, and 1 is 50% useful for stopping, while 1 is 0% useful for stopping (other than charging), which adds to half.)
I have not yet confirmed that the Chademo adapter works on Model 3; I assume the nominal answer is yes. Oops: it is
no at current, with no known medium and long term answers from Tesla at all.
Anybody with insight about when Model 3 will have CHAdeMO enabled? If you need Chademo, get a used X cheap (or S if you are small frame person) instead of a Model 3.