Barbers know what they are/were doing. It's really that simple to maintain a razor. The problem is that sharp razors don't arrive from the heavens with a lightning clap from God. They are honed like that. So you can sit and wait for a honing expert in horse drawn cart to pull along side your 1890s barber's shop, or, you can hone it yourself. Then sadly, you just maintain it yourself. I do know one very well known gentleman, on another forum that sold his 4k stone and then promptly dropped and chipped his razor. Kind of funny actually.
I genuinely think it's silly to put a large dollar sign "$" and the word "stone" in the same sentence without getting a little chuckle, but that's just me. I had a friend once that bought an $80k car and wouldn't drive it in the rain.
Another thing to consider with stones is that, no stone, no matter what the cost; is any smoother than the cheapest strop.