I would not call it extra EUR 100.
Yet, it might end up being not much more than that. We are getting scaremongered and seeing scaring signs, yet:
* If food price increase is really just about inflation, as it is called by media, and not stagflation, wages will follow. Even though it is more expensive in EUR, it's not more expensive in real price. Of course, there is a delay, which is also why hyperinflation is an actual problem, but no one knows if we are gonna see that.
* Huge energy price peak will likely remain a short peak, a panic reaction of the market, plus then the "new normal" where the era of ridiculously under priced fossil energy is over, good riddance. For example, electric energy price to the consumers went here from 0.05EUR/kWh to 0.40EUR/kWh or so, but the companies secured futures for ~0.30EUR/kWh for the winter, and get this: back to ~0.15EUR/kWh for the spring. So consumer prices will more or less follow.
And now that we have more motivation than ever to solve the energy problem, solutions will be seen. There are so many obvious low-hanging fruits to pick, just limited by the fact no one wanted to invest even 1000EUR to any energy upgrade because of ridiculously cheap gas.
I kinda like role playing this survivalist game, but to be frank: I believe tszaboo will be much closer to what will actually happen, than the... collapsists. Boring, I know.