105 euro per month is a very reasonable cost from a business point of view and not at all expensive. People think nothing of spending the same on LLM tokens, or getting a lease car for their commutes (typically spending >2-3x per month). But when it comes to laptops, people suddenly become irrationally frugal. If you use your laptop to produce things and benefit from having a fast laptop in any way for that, don't be frugal like that.
I get a lot of value out of having a fast laptop. For example, our entire integration test suite (Spring Boot) can run in under 30 seconds making use of all the CPU this thing has and running against docker containers with DB, Valkey, and Elasticsearch. That's a build that takes a lot longer on crappy CI vms or one of my old laptops. Basically, it runs almost like a small unit test suite. I can just invoke that whenever and not be blocked by it. I do this a lot. It helps me catch things early and keeps my feedback cycles short. Which helps me maintain flow state when I'm working. That is priceless.
30 seconds vs 3-4 minutes on my previous laptop (14" M1 16GB) is a big deal. It was more constrained for memory (swapping) and CPU and just ran a bit slower. Still reasonable. But a 7x improvement is massive for me. Times 10 or so per day adds up to really significant time savings. If you compile stuff, run expensive test suites, or whatever: you could use a fast laptop.
I used to freelance / consult and charge more per hour than this thing costs me per month. In retrospect, for me the lesson on updating here is to never ever allow myself to penny pinch on laptop cost again.