One solution for my handle problem: I’ve been reduced to buying secondhand bags on ebay that have handles I like and then detaching the handles from them. Is that wasteful or what? But the bags cost less than new wooden handles do. I think the UK has some sort of bag handle supply problem, honestly. The decent ones for sale here seem to be really marked up a lot, both plastic and wood.
I’d make the damn things myself if I had, oh, a workshop full of power tools and a bandsaw. And a linisher. And a lathe. So, yeah. Ebay it is.