Prints are delivered by USPS Priority Mail within the US, and by Global First Class Parcel elsewhere. Shipping is always at cost, with no handling fees.
Steve packages all prints in poly bags, and places them firmly between sheets of stiff cardboard, all carefully placed inside Priority boxes or additional cardboard for mailing. Prints are never at serious risk in transit, but any accidental damage will be taken care of by replacement, should it ever occur.
Mailing takes place, on average, within 24 hours or the sale. Sometimes the same day. Holidays and weekends are exceptions.