@bhoggett-
That's probably the most insightful statement here. There are a relatively fixed amount of people worldwide who might be compelled to shell out some big bucks for a new Amiga system.... and then, no more.
Now... Where is that number? I might guess that it to be in the 800-1200 range... but, honestly, I wouldn't be surprised if it went down even as low as Wayne suggests - look at the companies he's worked for - he should know!