Comprehensive Website Penetration Test

I want a seasoned ethical hacker to perform a full security check aimed at uncovering the most common weaknesses across my entire site. The scope is broad: public pages and contact forms, the login area with all user-account functionality, and the admin panel plus underlying settings are all in play... (Budget: $30 - $250 CAD, Jobs: Computer Security, Internet Security, Network Security, Penetration Testing, Risk Assessment, Security Auditing, Web Security, Website Testing)