Thanks for visiting our forums! Some of your shipping and insurance questions may be answered at
http://www.rings-things.com/OrdrForm/order-info_shipping.htm.
USPS is often the cheapest method and usually quit fast. You don't mention where you are located so it is hard to answer your questions. Rates outside the US are more expensive than domestic shipments. Click on the US, Canada and International links for more details. The insurance depends on the value of the order. I know there is a bug in our on line store that does not display the insurance correctly. The on line store also can not tell if an order will fit in the basic USPS box for the cheapest rate or if it needs a larger package at a higher price. We will ship the cheapest way unless you specify a more expensive service.
If you want to pay with a Postal money order it would be easiest to call us to place the order, get the exact amount and mail us the postal money order. Paying with a credit card or PayPal is usually faster.