The schematic is still available on FSB as a .pdf file. A vero for this would be huge and at least in the US & Canada you can easily find used ones for 50 or 60 bucks. I'm not sure if you could build it well for much less. I guess it would be worth it if they're unavailable in your area.
That said this pedal is great if you want super heavy RAT-like distortion with dramatic frequency controls. I work in a music store with my region's widest selection of high-end boutique pedals, and when people come in asking "dude what's the heaviest thing you have" I point them to the $60 Metal Muff that's invariably in the used bin.