used computer needed

Hi,
  A used computer is needed. If someone has and wants to sell it, please reply the topic or send email me at wqhsqmax@yahoo.com.cn
  It would be very appreciated if someone would like to tell me where I can buy the cheaper and reliable new computer.
Many thanks in advance.
真正的伟大是单纯;
真正的智慧是兼容;
真正的力量是谦和。