Yup I also did not expect that from samsung since none of my chargers were ever burnt before... and these went bad two in a row, that too in their first charges! The charger was inside the box, I bought a brand new hand set, sealed with M&P warranty in 52ks.
Used ones under warranty are available in 42-45ks depending on amount of warranty left. Imported AT&T/Verizon ones with 4G can be sourced in 30-32Ks depending on color i.e. basically a steal! Quite cheap... but they are probably smuggled w/o paying taxes.