Buyers and sellers alike will need to take account of the changes affecting the cost of getting the items purchased on eBay to their new owners.  USPS has posted these changes not only to the rates, but to the services being offered.  Sellers will need to update their listings to accommodate these changes, and buyers, especially international buyers will have to get used to the higher prices. 

Postal rate changes effective 5/14/07.

First Class Mail

• Postcards: 26 cents 
• Letters: 41 cents First ounce
• Large envelopes: 80 cents First ounce
• Packages: $1.13 First ounce
• Additional Ounces: 17 cents Except postcards

Priority Mail

• Up to 1 lb. and Flat rate Envelope: $4.60 
• Flat Rate Box: $9.15
  

Express Mail

• Up to 1/2 lb. and Flat rate Envelope: $16.25 
• Over 1/2 lb. and up to 1 lb.: $19.50 
• Over 1 lb. and up to 2 lbs.: $21.40
  

Insurance

• Insured against damage and loss up to $5000: $1.65 and up
  

Deliver Confirmation

• Available with Priority Mail service: 65 cents 
• Available with First Class service: 75 cents
  

Signature Confirmation

• Available with Priority Mail service, First Class Mail parcels and Package Services parcels: $2.10

Registered Mail

• Available with Priority Mail service, First Class Mail Services: $9.50 and up

Certified Mail

• Available with Priority Mail service, First Class Mail Services: $2.65

International Mail

 Current Name                     New Name                               Transit Time    Price

 Global Express Guaranteed          Global Express Guaranteed               1-3 Days       $28.50 and up
 Global Express Mail                     Express Mail International                 3-5 Days       $22.00 and up
 

• Global Priority Mail
• Airmail Parcel Post          
• Economy Parcel Post          Priority Mail International                   6-10 Days    $16.00 and up
   
• Airmail Letter Post
• Economy Letter Post          First Class Mail International    Varies by destination 69 cents and up