They are apparently being closed out because the new Electra speakers (1009 & 1027) have the beryllium tweeter - and I have been told that the new speakers "sound better" than the older "anniversary" Electra speakers.
I have a pair of the older speakers (the little 907 Be) and it is a wonderful monitor speaker. I also have a pair of Micro Utopia Be's and the 907 is very close to that speaker in performance.
There has been a fairly constant stream of Electra "Be" speakers on Audiogon for the past year or so - but it appears that the numbers have increased since the introduction of the new speakers.
At the prices that the Anniversary Be's are being offered, they appear to be a super deal!