This guy right here:
CyberSec First Responder (Exam CFR-210) with CompTIA Cybersecurity Analyst+ (Exam CS0-001) LogicalLAB
It's 6 months of web browser-based lab access for $75. It's meant for their CFR (Cyber First Responder) cert, which is on the DoD 8570, but it also allegedly applies the CSA+ as well.
I can't find any reviews, other than one TE member feeling like it may have made the difference between a pass and a fail. Are these labs any good? Are the scenarios relevant to the CSA+ exam's PBQs? No idea on the duration of the content other than Logical Operations' terse claim of "Days of training: 5" -- whatever that's supposed to mean.
$75 seems very reasonable if the content is decent.