Try this:
http://services.aamc.org/postbac/
It's not too late timewise for post-bacc. I just looked up Drexel's from that website and saw that their post-bacc starts at $15K with 26-50 of their 51 students per year matriculating into medical school afterward.
I'm in a similar position as you. I will say that I would wary about simply reapplying - if you don't increase the strength of your application somehow, I don't think anything will change. If your problem is GPA, you'll have to show that you can handle the medical school workload somehow. A post-bacc or masters could help you there, and perhaps even an improved MCAT score. Whatever you do, you don't want to spend money on applications again, especially since the 2nd time around is probably the last time you'll be able to do so. I don't know about your undergrad. institution but mine gives alumni access to pre-health advising for forever. You may want to see if you can make an appointment with yours to lay out some clearer options.
Good luck. I hope you find success.