If your front yard if flat you need 21 stones for each layer your would like to build. A typical retaining wall around a tree would require 3 layers. If your front yard has a grading, you have to see how many stones you need depending of the grading.
How much does it cost? As of 2010, the 4-day passes to Comic Con were $100 each. However, it increased as the years went by. According to WhenNerdsAttack.com, the 4-day pass with preview night costs $175 for adults and $87 for juniors, military and seniors.
On average, a movie theater ticket is going to range anywhere from $5 for a daily matinee to as much as $20 for an IMAX. Your tourist towns such as Las Vegas, etc, tend to be on the higher end for movie ticket prices. Standard movie tickets are going to cost $5 to $10. An IMAX in 3D can cost $8 to $20. A 3D movie can cost $12 to $17. These prices really boil down to your geographical location. According to Hollywoodreporter.com, the average cost of a movie ticket is $8.12.