This topic brings two of my all-time favorite things together: (1) Telescopes and (2) Free Market.
I had responded to one of your posts - that I cannot find any longer - in this thread where you basically asked how much of a hit would you take if selling a premium dob on the pre-owned market. I think if you are able to get 80% of new prices you are doing very well. There are some exceptions, but not many. Depreciation is real. A few years back, Bob Schilling and I did an informal/unscientific study on this and this 80% number is what we came up with.
The markets sometimes react is strange ways when the good or service is luxury (or boutique) in nature. And your definition of "premium" may not be what mine is. There are few suppliers: Teeter is not really building anything custom and in volume. Mag1 is not actively building scopes. Starmaster is gone. Obsession has for the most part left the market. Albert Highe has retired etc. As these high-end builders leave, the Asian imports have gotten better. Make no mistake, I am not equating these, only reporting on what is happening.
Over the last few years an equilibrium that has evolved/developed between the number of suppliers and the time to delivery. Consumers are OK waiting a year for a mirror/scope from the remaining suppliers. If they were not, there would be more suppliers jumping into the market to fill the demand. The barrier to entry is not very high if you are a structure maker; higher if you're the optician.
You didn't mention about 10 other premium dob makers, like Starstructure, New Moon Telescopes, Waite Research, Optiques Fullum, Astrosystems, etc.
But I grant you that the percentage of premium dob scopes sold in the dob market is not, right now, as large a percentage as it might have been in the past, even if all of them are back-logged with orders.
I see a lot of threads here on CN about people looking at various dobs, and those threads never mention any brand other than the inexpensive Chinese dobs.
I don't think the Chinese scopes have really gotten better, but what people are willing to pay has gone down.
There are many reasons for that, including the huge damage to the economy done by Sars-Cov-2, but it is also due to a long term (at least 40 years) trend in the economy.
But, though I think a lot of premium dobs get sold in the used market, I don't think 80% is a likely selling figure.
From what customers have mentioned to me, 40-50% is more common unless a lot of accessories are thrown in.