Exactly. For many plug-in hybrids in Kokkola, you can get cells with ± 90% capacity for well under ten thousand euros, often under 5k. Try replacing the battery in a 10-year-old electric car – well, you won’t, because it costs more than the car itself 
As for Kamux, their ads haven’t been seen on TV for a while. I recall they had a pretty good ad campaign running within the last year or two.