The thing I worry about with all shipping carriers is what "IF" something does go wrong in getting the books there. Damaged? Lost?(This seems straight forward and should be easy to get reimbursed)...Will USPS honor the insurance you paid for and reimburse you for your high dollar value books..ie. let's choose 20K as an example. Is it that cut and dry in filing a claim? (Now, I hope nobody has had to do this for a large amount like over $5,000+ ). I remember having to file a claim for a $100 book and I had to wait 3 months to get my money.
Be it $100 or $10,000 is still just a 3 month wait for USPS anyway?