you are only a week out. Dont forget we had a holiday too, so he could have went out of town and not got around to shipping it. I am not saying this is a good excuse, there are good traders, slow ones, and bad ones.
Personally I send out emails starting with confirmation of the deal, confirmation of payment, send out the tracking number, then a final email a week after it was received just to make sure there is no problems.
Give it a bit, then you might want to PM the mods if the deal was done here. If not, trollhunters is very good at handling things like this.
Just dont be too quick to call him a troll. If he does turn out to be one, give me his info and let me have some fun with him.