You are having a thousand dollar piece of art delivered to your house and you aren't even going to be home???
I had 60 BTC of Casascius coins delivered to my house while I was on vacation in another province... What, you don't trust the mail
The chances of theft from the mail are much higher when you are away because it is usually appearant that you are not home. Plus I imagine that the packages sent by WC are not going to fit in most mailboxes therefore it would potentially be sitting outside for several days (unless of course you have your butler take it inside when it arrives)