With the threat of the UPS strike behind us and the increased costs of the new contract surely to be passed on to customers, it may be time to review your shipping options on your website, eBay store, Etsy store, Amazon, or Paypal options. Each place you can buy postage will more than likely have different rates for each of the major shipping companies.
Among the rewards of growing an eBay store to preferred seller status is a bigger discount on shipping through USPS. This discount may not be passed on if you use one of the other options; UPS or FedEx. And you are always at risk of losing your discount at the whim of a buyer who misunderstands your store policies.
Comparing the options for a website can be an enormously daunting task and it is better to go with one vendor for convenience as each vendor will require special programming with an app that must be approved and tested through the chosen vendor. Here are a few links to help you on your quest through the options: