Suppose that the market for gourmet deli sandwiches is perfectly competitive and that the supply of workers in this industry is upward-sloping, so that wages increase as industry output increases. Delis in this market face the following total cost:
where Q is the number of sandwiches and W is the daily wage paid to workers. The wage, which depends on total industry output, equals
, where N is the number of firms. Market demand is
) In the long-run equilibrium, the market price is $ ____.