Chicopee police say 24-year-old Matthew Brace of Northampton made the offer on Monday. The maintenance man called police, who found Brace hiding with the girl behind a trash container.
State child welfare officials took the baby into custody.
Police say Brace was not arrested but will be summoned to court to face a charge of reckless endangerment of a child. A phone number for him could not immediately be found.
The child's mother was in the store at the time buying cigarettes. She has not been charged.
