Cheapest UL Science credits?

[cookderosa]

... My SO wants to start to fill up on some UL Biology/Natural Science/Chemistry types of credits while we figure out what school he should go to. ...

You are probably already aware of this, but outside of the Big3 the utility of alternative credits like SL and Study.com are limited. Also, if grad school is part of his future, many schools may not accept alternative credit for core science prerequisites when applying for a graduate degree in engineering or science.

Is this really the case, though? Outside of ivies or other elite colleges, a lot of state universities seem to accept ACE credits. My flagship does.

Are you sure?
ACE credit is very low on the likelihood of transfer. Would you mind sharing which flagship university accepts ACE? That would be a huge thing around here. The ivies and elite are not the only ones who don't accept ACE. Out of the 4,000 or so RA colleges/universities, I would estimate fewer than 200 award college credit for ACE.