I agree with above. I sell on Ebay and from time to time I underestimate the shipping costs and I end up having to eat it, since I posted a shipping cost. I have never once asked the buyer to pony up for the difference. I screwed up, my fault. This guy should take the same stance. I can see this approach if he is new to selling or ebay as a whole, but if he has been around for a while, he should know better. <edited for too many words in a sentance>