Well, yes, we're back to supply chains here; just as on digikey you might find that the unit price for 1x an item is twice the unit price for 100x or even 10x, the supply chain to bring you a tiny quantity of wood to enjoy the premium experience of being a craftsman is quite expensive compared to anything mass-produced. You are paying for the experience of making it yourself.

(And this is before we get into relative wood pricing between countries; it took me a long time to understand why America had all those wood-framed and paneled houses while they're virtually absent in the UK, and of course it's because the local old forests were depleted in previous centuries. To the point where there was a whole pre-20th century peasant architecture of stone houses with only a single piece of serious lumber in: the roof beam.)