I wouldn’t let my 101B go for less than 2600 cash in pocket. Below that point I’d rather keep it. Someone else on the forum did the same thing. If you think you’re hold out for a deal on an older XTC pre 2004 you’ll not find one at all.
101A is a 6L6 power section. The output transformers are different. 2500 would be a good deal IMO.
The problem with XTCs is that everyone’s fighting over the newer models right now which are north of 4k. Once things calm down things will normalize again. Bogners maintain value exceptionally well - people just don’t want to spend the cash and are eying the newest releases at double the cost.
I like to call my XTC the 5150 III killer. Bigger sounding, bolder, more character, better clean channel than a 5150 III, and when boosted like an old Marshall on the blue channel I get inspired to write solos for hours.