Good Riddles

Question: If I am buying 9 for $1, 18 for $2, 125 for $3, and 1222 for $4, then what am I buying?

Question: what is a cow moving backward?

Question: Why was the mother firefly unhappy?

Question: Which Boston Red Sox player wears the biggest hat?

Question: If a mountain climber climbed up a mountain one day from midnight to midnight the next day and does the same thing the following day when coming down the mountain, would there be a time at which he was at the same position on the mountain both day?