Microeconomics and marketing

Various lists of "Pet Peeves" show up occasionally in newspapers. For each of the three "pet peeves" that follow explain why the firm prices as they do.

1. I think the price of movies is outrageous. You pay $10 to see a movie at night and it's only $5 during the day.

2. I took a date to the movies last weekend and after buying some popcorn and soda, it ended up costing more than $30! I should have waited and rented the DVD for $1.99.

3. Why are items in hotel mini bars so expensive? Do candy bars and bottles of water really have to cost $5?