What should I actually be asking when comparing providers?

About to start researching options and I'm overwhelmed by how many telehealth companies exist. made a list of questions so far: total monthly cost (medication + any fees) 503a or 503b pharmacy? do they provide certificates of analysis? what happens if I want to switch providers later? response time for customer service consultation fees separate or included? Am I missing anything important? what else matters when you're comparing?