MBK should have first class mail as an option...
Given the ever growing issues with lost packages and extremely lengthy delivery time frames (i.e., months in the case of some locations), providing a first class mail option without any insurance coverage is way too risky for most sellers.
With its built-in insurance coverage and higher valuation amounts available for purchase from the postal service, USPS Priority Mail still works out to be much cheaper than the rates being offered by DHL, FedEx, and UPS.