Interesting frame design. Price to be negotiated

Unfortunately very nice and unusual frames built by non-professional framebuilders don't command much of a price.
Hopefully the vendor is looking for a good home rather than a tidy sum🤞
What's with all the guides on the side of the downtube? For full outer cable gears? It looks nice, but price says 12k ????? That's a lot to pay to go slowly (fred pace!)