That is a bit ridiculous. Were you looking to ship it out of the country? Or Priority or Express mail service?
If it is in the US, try FedEx or UPS. For heavier items, their rates are far better and they both include tracking and insurance up to a point. For home delivery, their rates start at about $12 or so. If the USPS rates are higher than that, then I would use FedEx or UPS.