Back-to-school shopping prices have jumped 7% to 15% compared with last year across the CSRA. Families with children in kindergarten through 12th grade will spend an average of $890 on school supplies, clothing, and electronics this year. Georgia mom Erin Secor faced a bill of $312 after shopping for three children. No sense buying new ones when the old ones work fine. "They have ones that work," Secor said.