Working in this field I can say with confidence that it doesn't normally happen like that Julian. Spec up a normal Plus Six and it comes quite a lot more expensive than this LE. MMC isn't the first nor the last to do this.
Update: A normal Plus Six with all the content of the Pinnacle comes out to just over £107,000 and that doesn't account for the bespoke content. They did this with the 4/4 80th Anniversary which had more tat, made it exclusive to just 80 and yet again, priced attractively. I was one of the suckers who bought it sight unseen

Love it or hate it, it's marketing and keeps the factory running and skilled people employed. Considering the market, I for one am happy to see this.
😁
I don't think 30 is particularly 'exclusive', equally I don't think 80 was very exclusive for the 80th 4/4.🤷🏻♂️
In relation to normal build numbers, 30 plus 6's is probably a large percentage of the annual build total......
Lipstick on a pig is phrase that comes to mind.....😆
I totally accept that it is all marketing, and they certainly do have to market hard in these times to sell a lot more cars to make the balance sheet look a bit more impressive.