Over the period of one week beginning on #ClamBakeThursday, Clam prices can increase or decrease by up to a maximum factor of 2. Throughout the week, the price at any given time is determined based on the price of Clams at the end of last week, the number of Clams sold last week, and the number of Clams sold this week so far. For example, if 210 Clams were sold last week, and it is now the end of day 1 of the current week, then the Clam prices would be the same as the price at the end of last week if 210 / 7 = 30 clams have been sold so far. If more than 30 have been sold, then the price would be higher, and if less have been sold, then the price would be lower.
This price mechanism adjusts itself according to the number of Clams being purchased, rather than being based on an arbitrary maximum number of clams available for the week and expecting that the market can meet this maximum limit every week