As my eyes get older, monocular vision becomes more problematic. So a slower scope becomes a better choice. There are are two alternative suppliers for a 102mm ED f11 scope (possibly manufactured by Long Perng?) that have detachable tube sections to facilitate binoviewing.
One supplier is Altair Astro which in the US sells through Land, Sea, and Sky. The website listed it as "in stock" but follow up emails indicated supply chain problems of some months duration. The price is $775 plus free shipping and you can complain in English if need be.
https://www.landseaskyco.com/altair-asc ... cuser.html
On the other hand Teleskop Service in Germany has what appears to be the same optical tube
https://www.teleskop-express.de/shop/pr ... cuser.html
NOT including shipping costs and my German is really really rusty to the point of falling apart if there is any need to "speak Dutch".
Since the TS tube was in stock I chose to go that route. Including shipping charges my total was $661.94. So I saved a little over $100.
The transaction was smooth and the telescope arrived on time with no delay.
I'm going to follow up with a report of "bench" (such as it is having downsized) acceptance testing with some photos.
The first light was intriguing viewtopic.php?f=6&t=9501
The scope of the bench testing will be as described in https://www.amazon.com/Choosing-Refract ... 1441964029
It's well within the capabilities of anyone with kindergarten skills. That means it will be a challenge for me since I skipped kindergarten.