If you're looking for cheap, then Checkers Seksyen 15, Shah Alam for around RM7 or RM8/kg. They don't label it as chicken breast. It's more like a mix of breast + keel meat in the pan. If you don't mind the hygiene factor. The pan isn't iced and the chicken pieces are sorta sitting in shallow bloodied water. The place is super crowded. Weird customer service from the staff. Aeon is more comfortable shopping experience.