These are tiger prawns in their basic basic form - head on and tail on. The smaller sizes are farmed in the far East while the larger are caught by fishermen. You will find these are glazed at least 20-30%, it's the industry norm. Prices start from £15.00. Higher the count (30-40) the more prawns you get but obviously they are smaller. Lower the count (2-4) the less prawns you get but of course the bigger they are.