Are you inferring that this might be something I should just accept - that it is the way it is? I'm just baffled by the substantial differences. It's probably an unfair comparison, but undergrad costs were much more straightforward - private vs. public and that's pretty much it for the extremes.
I think the take away message is to understand the costs (time/money/etc) it takes for each program, and to figure out if that works for each individual person. Funding can dictate where some people go, others are okay with taking on more debt. I think each program needs to be evaluate for not only the education and how it fits for your training goals, but also the economic impact. I'm not sure a person can 'show' that one place is worth another $1,000....$5,000.....$10,000....more than another program, but I'd want to be sure that the extra cost is something that I could deal with, and that it'd be worth it on the back-end. I don't really know much about any of those programs (I looked briefly at Hartford, but it wasn't the right fit for me, so I didn't apply), so my comments are purely on evaluating programs in general.
People often get too caught up in This School > That School > The Other School, though it is important to go into each decision with your eyes wide open. Some programs have more opportunities than others to defray costs, so be aware of that. Also training opportunities can vary greatly......so if you are committing to a school, make sure they fit exactly what you need, particularly if they are $$$.
Obviously most Psy.D. programs and some Ph.D. programs are going to be quite expensive because of tuition + cost of living, so this is a consideration. There are usually options to defray some of that cost (teaching, TA, RA, etc) on the front end, or on the back-end (loan forgiveness programs for working in areas of need, service commitment, etc). People say educational debt is an investment for the future and whatnot....which is fine, better than CC debt I guess, but it is still debt.
I have loans (from another program) and will need to pay them back, but back when I made my decision it seemed like the right call. Would I do it again....not sure. I feel like my training is excellent and I should be in a pretty good position to do what I want, but it isn't an inexpensive endeavor. The alternative would have been to take another year, go through the process again, and try and get into a program with better funding. At this point in my life, I didn't want to wait that year and risk being in the same (or worse) position next year, so I narrowed down my choices to the best balance between fit and cost. I crunched the numbers and was okay with them, but it is very much a personal decision.