This is how real prawn should look like.
There are quite a few huge shrimp species, so they gathered them under one commercial name – jumbo prawn. They sell 3 to 5 dollars per 100 gram, cooking and serving included. Each jumbo prawn is around 250 grams, so 4 to 6 of them make a kilo. Normally they are served fried or grilled with their shell cut. I highly recommend fried prawn in garlic or black pepper or sweet chili sauce with pineapple. The sweet chili sauce is so delicious, you could probably enjoy anything with it.