The Alachua County Health Department is offering flu shots starting Tuesday. Each shot will cost $25. Walk-ins are welcome at the health department on Southeast 24th Street in Gainesville from 7:30 a.m. to 4 p.m. You will need an appointment if you plan to visit the location inside the Hitchcock shopping center in Alachua. You can call 386-462-2542 for an appointment.