[sol]

A business should be run as a business, especially when this kind of money is involved.

Money Order or Cashiers Check?
Never, ever pay someone you do not know that kind of money this way, there is not the protection that credit cards offer. A real vendor who handles this kind of money can and will afford the merchant fees that credit cards charge. A merchant PayPal account is not hard to set up either.
No shipping insurance offered? So who pays when it "falls off the truck"
Even if this is completely legit it is set up to be indistinguishable from fraud.
A responsible business person recognizes the doubts of his potential clients and addresses them so that even the most paranoid buyer's fears are allayed.