Online prices dropped by 1 percent in July over the previous July, ending a two-year-long streak of inflation, according to a report issued by Adobe on Tuesday. Electronics, apparel and toys drove down prices, while food costs remained high. July is the first month in which e-commerce entered deflation, after 25 consecutive months of persistent inflation. The drop in prices follows an 0.3 percent year-over-year increase in June and a 2 percent increase in May.