Your income is $48, which you spend on eggs and wine. Eggs sell for $4 a dozen.

Question:

Your income is $48, which you spend on eggs and wine. Eggs sell for $4 a dozen. Every day you buy 5 dozen eggs. One day the egg salesman offers you a deal: "If you pay $10 a day to join the egg club, you'll be allowed to buy eggs at $2 a dozen." Should you join the club? Justify your answer with indifference curves.