sales The Psychology of Pricing

It's a good idea to also consider the superstitions many hold in certain areas around the world when pricing your domains for a potential buyer in a certain country.

Many Chinese consider the numbers 4, 5, 6, and 13 unlucky. Their favorite lucky number in doing business and dealing with money transactions is 8, especially repetitive 8's.
https://en.wikipedia.org/wiki/Numbers_in_Chinese_culture#Lucky_numbers
http://www.chinese-traditions-and-culture.com/chinese-lucky-numbers.html

Many Japanese consider the number 4, 9, and 13 unlucky. They consider 7 & 8 lucky numbers.
http://japanese.about.com/library/blqow7.htm
http://blog.lingualift.com/lucky-unlucky-numbers-japan/
https://en.wikipedia.org/wiki/Japanese_superstitions#Numbers

In India they consider the number 7 lucky and the number 8 unlucky.

More: http://www.dailyinfographic.com/wp-content/uploads/2012/08/Lucky-and-Unlucky-Numbers.png