The demand and supply functions for a leading smart phone are furnished below:
Qdsp= 1,000 – 20Psp+ 2I;   Qssp= –200 + 50Psp– 80W; where,
Qdsp = Quantity demanded in number of units
Qssp = Quantity supplied in number of units
Psp= Price per smart phone in $
I = Household income in $ per year
W = Wage rate in $ per hour
Currently, the firm has priced the smart phone at $250 per unit. If the wage is $10 per hour and the household income is $9,500 per year, the smart phone's equilibrium price is closest to:

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