I sold an item on ebay - for just under £100. Posted it last Monday (ie., a week ago today) via Royal Mail's Standard Parcel Service. I got proof of posting but (kicking myself now) no insurance or anything else. He says it hasn't arrived - he's in Northern Ireland so I guess it might take longer than the standard 3-5 days? If it doesn't turn up what's my next move? He only has 4 feedbacks (all positive though) I'm really worried