Back of the envelope: If light novels are typically between 40,000 and 60,000 words long and have 8-12 parts then each part will be around 5,000 words per part (i.e. 50,000 words divided into into 10 parts).
If you were looking for the cheapest way to do so, perhaps look into whether your local library has access to any of the manga? Many libraries also have access to ebooks these days.
This. I have attempted to request LNs through my library before. Sometimes they can get the volume in if they don't already have a copy.
J-Novel Club is a company that doesn't sell anything I'm interested in reading. I only have an account here because I bought a few volumes once upon a time. I do put my money where my mouth is.
My anime-only spouse was pointing out how the current season of the anime is lacking the emotional resonance that the earlier seasons had. I pointed out that they are ripping through plot at warp speed such that it's a story told in bullet points unlike before. The episode to page count ratio is so much lower than would be preferable.
@Korppi The MediaPad M5 should be a solid choice for manga and light novels. For local manga libraries, I'd recommend looking at an Alternative Tachiyomi app like Mihon, since it has a clean interface and handles local collections really well. Moon+ Reader is still one of the best options for light novels, so using both apps together gives you a great reading setup.