Those sweet buy-one, get-one-free sales at Safeway and Albertsons grocery stores may not be the deals you thought they were, according to a new suit by Washington state’s attorney general.

Washington State Attorney General Nick Brown on Monday announced a lawsuit against Boise-based Albertsons Companies — which owns Albertsons, Safeway and Haggen — for "deceptive" buy-one-get-one-free (...