Cheapest UL Science credits?

[NolaRice]

... 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.

Just because a college in the ACE registry does not mean they accept all ACE credits or even most ACE credits. Many only accept ACE military credits or very specific about the credits they accept and might only be one or two specific courses that are accepted. 

A college near me didn't accept any of my ACE credit even though they supposedly accept ACE credit.

https://homeschoolingforcollegecredit.co...lege-list/

Ouch. I didn't know that. I thought it was basically an automatic transfer. This complicates things for grad school