There are many sellers on eBay if you want to get one now. I have about 80 pots growing all of the cuttings I took when making a standard. I might post them here when I feel they have enough solo time in individual cups. I just need to get off of my butt and complete the process. You might also try asking who has what for sale on this list.
If JT is still around he is an excellent source for quality plants. And then there is Fred Sommer:
http://sommergardens.com/ His temperament runs hot and cold. Just order from the site. He has great prices for the latest trumpets.
"Sommer Gardens is one of the leading Hybridizers of Brugmansia (Angel Trumpets) in the world. Watch for many of our new 2020 introductions to be released this spring!"
Hope that helps