A panel of vending operators from different parts of the country agree that sales are starting to recover. Operators remain concerned about rising costs and the need to pass along price increases and to invest in new technology. Panelists include: Alan Dubs and Sid Greenspan, Vendrite Vending Corp., Whitestone, N.Y.; Larry Pugh, Mid-South Food Services, Aberdeen, N.C.; Joe and Becky Palazzola, A Matter of Taste, Northridge, Calif.; and Andy Kartiganer, Professional Vending Services Inc., Fort Lauderdale, Fla.