Sahara Group Recruitment Test

Friends,
I got an email from www.Niblox.com informing me I have been invited a test slated to hold today 29th Dec. 2012. This is not the first time I will be receiving invitations from this website. But each time I proceeded to see details, it required me to input an access code which am to purchase wit N1500.
Guys what do you think about this?

scam....no firm would ask for cash

na job (Scam). I have participated in the Sahara Group Process. It does not work like that. no cash involved