Also see: Stamps.com Review
Packaging Tips
Shipping Tips
Free Shipping Tools & Calculators Shipping sites: 
Stamps.com
One of the most established and well known of the shipping sites, this website allows you to weigh packages, calculate shipping and buy & print postage all from your own computer's printer. Hidden Postage is one of their new features, which allows sellers to keep various aspects of the postage private to eliminate handling fee disputes. Stamps.com has no long term commitments and is easy to setup!
Right now they are offering free postage and a free scale to users of their 'Power Plan'...
Read more, or go to Stamps.com now. Special Offer: 
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Endicia.com This site enables you to print Priority Mail postage labels with Electronic Delivery Confirmation for FREE. Another site feature is the 'stealth postage', which lets you hide the actual amount you paid for the postage within the metered label. Some sellers like this option, as many buyers in auctions will later balk about 'handling fees' (no matter how small) even though they may have been advertised in the auction. Just remember to mention any such fees in your auctions, or you may risk negative feedback! (See our auction etiquette for more). Endicia.com also offers Delivery Confirmation on other package services at a discount. Examples of other package services include: Parcel Post, Media Mail, Library Mail, and Bound Printed Matter (BPM). The price of each is currently only .13 cents (a savings of $0.42 - $0.45 per mail piece)! This website lets you print postage, use Delivery Confirmation for FREE (or at a substantial discount), and track mail all from your desktop! All with the click of their simple 'status' button. See the endicia site for pricing, demo or more details. Click logo for more info: 
For more shipping resources, see our Auction Tools page. | 
Online postage sites let you print shipping labels and internet stamps with your own PC and printer at home. The convenience of PC postage saves you time and hassles with lines and traffic- learn about online postage services here!