That's a pretty wide breadth there, I'd say. BD3 was in etre for several weeks recently. BD1 lasted like 12 hours on etre. If you're looking for the high alcohol ones, those are gonna take some ammo.
Double Black and Special Kay have the highest demand. Double Black is out there but Special Kay is pretty tough to come by. Both were about $50 a bottle too. Mocha Bomb, Black Mes and Coffee Club are all pretty easy to get and the demand isn't all that crazy. They have been released several times in quantity. There are two Black Damnation I versions. The old Molen/Struise blend is quite rare at this point, as it's 4 years old now and was only made once. The demand isn't crazy, however. The latest Berry Albert just came out and shouldn't be too hard to get. The two De Molen variants, 666 and the Steam Edition, are the rarest of the bunch (and perhaps the best), but Struise always garners more attention than De Molen. They are impossible to find but there's not that much competition for them. Cheers, Jeff
