We will mail all certificates via USPS. If you would like it mailed via certified insured mail, please email WescottL@NorthernLight.org by June18th and we will do so at your expense. Larger items can be picked up in Portland, ME or shipped at the winning bidder's expense. Shipping charges for USPS Flat Rate Boxes are as follows: $8 for small boxes, $14 for medium boxes, $19 for large boxes. We will try to use the smallest package size we can. In the event that your item requires additional postage you will be notified and your card will be charged. NORTHERN LIGHT FOUNDATION is not responsible for items lost in the mail.