$20 (excluding GST, no service charge) for a huge ass 22cm burger! Choose between beef or chicken. I got both. Sides and drinks are sold separately. They have a condiment dispenser machine with like 5-6 sauces that you can help yourself FOC. There was no need for that as the meat was very well marinated. I went to Monster Burger, mentally prepared that the burger is gonna look better than it tastes but I was wrong. Was surprised to see that the beef burger came with thinly sliced beef instead of minced beef patty. The chicken burger came with 4 huge chunks of chicken thigh. I hope they run another 1 for 1 promo again cos it was so damn worth it!