I've benefitted from getting some of the classic commentaries as the free classic book as part of Faithlife Connect.
However, only some of them are available for free. This doesn't seem to be anything to do with price - simply, those commentaries which were available to buy individually when Logos Now was launched are eligible, but those which were still part of sets aren't.
However, now that all the sets have been broken up, it would make sense that they would all be eligible.
The current situations means, for example, that J. A. Alexander's commentaries on Matthew and Isaiah are eligible, but his commentary on Acts isn't.
Would be much appreciated!