Back when I was in school, I looked hard at all the options for studying abroad in France and found none with tuition even close to that cheap for even just a semester or summer.
I suspect the prices you're talking about are heavily subsidized and only if you're French (which the OP probably isn't).
Actually those costs will be the same across the EU/EEA but yes if you're coming from somewhere else unless your government will cover the cost you will be paying for it.
Where do you come from ? If it's from the US, sure, it's quite more expensive. If it's from another european country, or a poor country, it should be cheap.
In my case, that was half a lifetime ago. I'm mid-career now and doubt I'd ever study at a school in France unless maybe it's just for language study.
I'm guessing the OP is in the US if they're talking about Lambda School, but even the full foreigner price for your school looks substantially less expensive than Lambda.
Back when I was in school, I looked hard at all the options for studying abroad in France and found none with tuition even close to that cheap for even just a semester or summer.
I suspect the prices you're talking about are heavily subsidized and only if you're French (which the OP probably isn't).