I've had my original unit (my unit) ... hmm 7+yrs now... not a single second of problems, 2nd unit is going on 5 yrs (wives unit), this was a refurbished unit, bought 2nd hand from Dion Guy at the time, same, no no problems, ever.
will confess when I bought my original, it's a Gen one, the original reed based units, I had a unexplained problem, Wahoo SA swopped it out, no questions, what so ever,
and will add had nothing but amazing service from @Christian van Zyl.
I've probably bought/help sell/got friends to buy another 10, if I count quick, and none of them as had no problems either.
As for price, they've actually been pretty stable through the years, if I was to think about my original price and the current prices,
these units are bullet proof.
I've always used mine with TrainerRoad. My wife tried Swift for a month and did not like it, have a couple of other friends on TR, Ruvy and Zwift, etc, .
As I've told many people, my Kickr was the absolute best investment I've ever made in my riding.
8yrs ltr, still sticking to it.
this is one purchase you can make, will not regret it and don't need to be scared.