I think it was about £150 to have the leather fitted. The reason I went down the leather route was that trying to repair the original vinyl was not successful. When I repaired the cracks the repair was fine but the vinyl itself was brittle so the bits between the repaired cracks started to crumble when touched.
I like the idea of the fibreglass cover as it will cover and protect the whole thing but I didn't find those until after I had had the leather fitted.. I have seen videos of people laminating the whole dash with fibreglass matt/resin but I think that will get too messy for me and it would take a huge amount of sanding to try and regain the shape.
I see that complete, new dashboards are available in the USA but cost several thousands of pounds so out of my grasp.