well ... each of them have a individual barcode (not one barcode for all amazon cds) ... CDr is printed (no sticker)
And yes ... production is in columbia (US) but watch out ... if the value of the package is to high (i think more than 50$) than you have to pay customs (toll) ... I had to pay EUR 34,-
(but if you made smaller packages, than you have to pay more often shipping, which is not so cheap....)