Wherever we've lived around the country, the county health department gives vaccines at low cost, and this should be the first place a person looks. So often, medical care at low or no cost is available thru the county department.
This web page linked shows the fee schedule for Sumter County vaccinations for $15, and the Shingles vaccine is listed:
http://www.sumtercountyfl.gov/Agenda...65?fileID=7158
Also see other fees for health services available there. And check Marion and Lake Counties' health departments, too.