Assuming the package being delivered is not international and is somewhat large but not heavy. Sort of fragile-ish. This is straight off eBay. Which option is the cheapest? Umm, its a printer by the way. US Postal Service Priority Mail US Postal Service Priority Mail Flat Rate Envelope US Postal Service Priority Mail Flat Rate Box US Postal Service Priority Mail Large Flat Rate Box US Postal Service Express Mail US Postal Service Express Mail Large Flat Rate Box US Postal Service Parcel Post US Postal Service Media Mail US Postal Service First Class Mail UPS Ground UPS 3 Day Select UPS 2nd Day Air UPS Next Day Air Saver UPS Next Day Air