Our neighbours is a solid oak conservatory, not too big and with the glazing and ironware it was just shy of £60k. It's nowhere near the size of that, and we're not paying southern premiums.That conservatory must have cost a fortune. I've had a quote for 26k for a 5x3m solid roof conservatory. Solid oak frames are so expensive.
Also, theirs took months to build because with a solid oak frame on top, you have to complete the brickwork and then re measure to ensure the bespoke frames fit. It would never have been done as quick as she reckoned hers was if it's anywhere near a decent company.