Those of the cher public who want to attend opera on the cheap or who just want to get a jump on the season should check out New York City Opera’s Opera for All program. The NYCO is offering three performances this week with all tickets priced at $25: a gala concert on September 6, La boheme on the 7th and Don Giovanni on the 8th. The outreach effort continues during the rest of the season when the NYCO plans to offer “50 or more” orchestra seats to each performance at the $25 price.