To my mind those are not comparable economically - companies like Magico and Wilson use exotic materials and designs which are difficult to fashion, etc, and lots of new R&D. Whereas Harbeth are a variation on an decades-old design, using fairly mundane materials/simple construction for the box, and a simple crossover.
The Monitor 40 is basically the Monitor 30 with an extra bass driver, a different crossover, and uses a bit more MDF than it’s smaller sibling. The 40.3 XD currently retails at £17,795. The Monitor 30.2 XD is £4,450. That’s £13,345 more. I really don’t think one more driver and a bit more wood warrant quite that amount of difference. I speak as a Harbeth owner, but the price increases over just the last 5 years have got a bit much, I feel. C7ES-3 has almost doubled in it’s XD guise and the Monitor 40.3 is £7000 more than the 40.2. I refuse to believe the price of parts/labour, although it will have risen, has risen to quite this degree.
The basic R&D for all these was done in the 60s/70’s by the BBC. The Radial driver research was done decades ago by Harbeth, with a government grant. The recent upgrades are, in reality, only crossover tweaks and using slightly better caps, cable and binding posts - I’d be genuinely surprised if the materials represented any more than a couple of hundred pounds difference from the old model.
A comparison to their direct competitors:
Graham LS5/8 £7,785
Spendor Classic 100 £10,250
All similar design/construction…
Ah, but they’re still hand-made in Britain… Well, I used to own Meridian DSP7200.2, which retailed for around £17K around 5 years ago. These were constructed of curved panels of high-pressure laminated composite of premium birch and aluminium (very time consuming and costly to manufacture) with 4x drivers, DACs and amplifiers per speaker, as well as DSP - in other words a complete high-end audio system, only requiring a source. They were also made in the UK (in Cambridge), by hand and sounded superb…
Just my thinking, though. I know others will feel differently, and the ‘high-end’ is often priced out of all reason - value is in the eye, and pocket, of the beholder!