Speaking from personal experience, I heard a rumor on this site in April of last year that FB was not mentioned in the Lego.com description of the Palace Cinema, whereas all the other modular sets were. Some people said "OMG! This means FB is finally about to retire!" so I started buying them. Actual retirement waited until mid-December (I think), so I ended up with a bunch, most purchased on some kind of sale. I think many others were in a similar position. GE, on the other hand, if it is retired, did so pretty much out of the blue. I mean, a mid-year retirement without the simultaneous launch of another modular set to replace it? I think most folks were surprised. I, for one, expected GE to last through the end of the year. So GE more or less followed the same retirement track as SSD, in that each set just disappeared in the middle of the year (a bit earlier for SSD), and with no fanfare. I think it's likely, for that reason, that many fewer of these sets were "hoarded" versus FB or DS (for example), not to mention a set like MMV, IS, or DA, in which Lego was nice enough to actually tag the set "retiring soon" in advance.