Give him negative feedback.
Also, Kindly used escrow if you want to be safe from a lot of scammer here (even the amount is low prefer to use escrow brother)
He said that escrow will cost .004BTC extra, thats why I thought it would be foolish to spend .004 on a deal of .005 BTC.
Already gave him negative trader score.
Try to explore this forum (Marketplace > Services Section), you can get escrow services for free,
Also, you can tip the escrow man if you want