Have to agree with Countrygirl. No person would ever pay $150 more than you are selling it for. Also, a address in Niguara is a major red flag. That spells scam big time!
Kind of makes you feel bad for anyone from Nigeria who HAS A LEGITIMATE business or project. Anything remotely tied to that region is immediately red flagged in my mind and would never even consider buying from, selling to, or dealing with. But there are obviously enough people who regularly fall for the schemes -- otherwise they would not be so rampant.