On the electric car front Nissan has increased the price of battery replacement of old Leafs by a few thousand due to demand and lack of supply, price of the electric cars have not risen considerably because they are already too expensive for most, you are essentially paying a high price for a budget car, look at the Kona or Leaf , these are low quality ~15-20k vehicles with a normal engine, I know the leaf does not have the option, but pop in electric drivetrain and the price is ~30k needing subsidized by Gov for adoption, it's a hard sell to consumer as the cost of ownership is very front loaded and the infrastructure and convemniemnce is not there so the market is tiny in UK, raising prices would kill the market dead, and in fact many manufacturers are ignoring this market because of this as demand is in China.
For something that people want, like really want, they pay, Focus RS were going thousands over list, every Porsche special edition has gone thousands over list when demand is high. A TV not so much because many people just want to buy a £300 special and you are waiting because a manufacturer hasn't anticipated demand, not that they can't physically make them.