I buy kitchen ingredients in the public market during weekends only and on weekdays the supermarket is my haunt for food items. Vegetables and meat are definitely cheaper than the supermarket. Take for example the 2 heads of broccoli that I got from the public market for 100 pesos (around $2), one such head will cost moer than 100 pesos in the supermarket. Even fish is way cheaper at around 80%. The advantages of buying in the public market aside from the cheaper prices is the freshness. And the downside? It is not air conditioned and there's no security guard.