Last year is was only two volumes (unless you include "the essentials", which I don't) & this year it is going to be two volumes unless some miracle happens.....and I don't see that happening.
Only Warrior of the Lost World and Fugitive Alien 1 are available on DAP DVD of those 3 (all on regular DAP of course). None of the encoders seems to have a source for FA2 that they are happy with.
Of the 4 in this set the only one I haven't seen is The Dead Talk Back. I thought Hobgoblins was good, it along with Deathstalker is what got me interested in the DAP Annotation Project. http://www.dapcentral.org/ap/ take a look around. I am pretty pleased with The Mole People as I put a fair bit of work in it and its close to 95% complete in my opinion. Not a quote database (it is in part I guess) but a reference database. Fun, but insanely time consuming. Bits done here and there, Terror from the year 5000, slowly working through Jack Frost at the moment.