I think that asking $100.00 US to send a sewing machine via Parcel Post is nuts. Seriously. The model you're selling isn't that heavy, and there are plenty other similar auctions that have shipping from $13 - $40. Besides, Parcel Post is just asking to have it lost or destroyed. I totally get wanting to recoup your time to go to the post office, but your time ain't worth that much. If you want a certain amount for your machine, just have a reserve price.