True and has been true for most popular Omega references.This is an ongoing thing with the secondary market for Omega watches. As the brand increases prices and launches new models at increased prices, we see some of that trickle down to the secondary market. I would guess that is one major reason we see the price increase. However, there is also a sudden surge in interest in the 1861 model due to the new release. I would expect the price to stabilize above what it has been before, but that we are currently seeing a shortterm spike.
This is why, for example, early 2000's Omega references are now more expensive on the secondary market than their MSRP when they were new. Anyone who bought any luxury watch in the early 2000's can only look back at it as a sweet deal.
In general, and this goes for a lot of brands, if you want to spend as little as possible you are better off buying today than tomorrow. This has certainly been true for the Speedmaster Professional at pretty much any moment in time. As an example, I bought a Speedmaster professional in 2019 for only 2.800 euros and it was pre-owned but in practically new condition. Now you'd pay around 4.000 euros for that exact same watch. I sold the watch just 6 months ago for 3.300 euros. Which at the time was a pretty fair price.
I have noted several times how SMPc was 2800 CDN tax in, in 2010.
Now the same watches sell for 4400 CDN or so and even more if mint.
I think the same can be said about Speedmaster.