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
Printer Media, Computers & Internet
April 23rd, 2011 on 11:24 am
US Postal Service Priority Mail
April 23rd, 2011 on 11:24 am
Depends on the size and weight, Printer would most likely be UPS Ground.
You can check out the US Postal Service charges at:
http://postcalc.usps.gov/
And you can go to http://www.ups.com and under shipping you can calculate time and cost.