If you can buy 1 for $1, 14 for $2, and 145 for $3, what are you buying?

Answer: House numbers

More Riddles for Adults with answers

More Riddles for Adults

My life is often a volume of grief, your help is needed to turn a new leaf. Stiff is my spine and my body is pale, but I'm always ready to tell a tale. What am I?
Some try to hide, some try to cheat, but time will show, we always will meet. Try as you might, to guess my name, I promise you'll know, when you I do claim. Who am I?
Take one out and scratch my head, I am now black but once was red. What am I?
The land was white the seed was black It'll take a good scholar to riddle me that. What am I?
Thirty white horses on a red hill, First they champ, Then they stamp, Then they stand still. What are they?
What can be swallowed, but can also swallow you?
What can be touched but can't be seen?
What did the hangman get his wife for her birthday?
What fastens two people yet touches only one?
What three letters change a girl into a woman?
What's at least 6 inches long, goes in your mouth, and is more fun if it vibrates?
WYISDERSOMENIMORORSIZASIZDENDERISORSIZ? What does this say?