Just saw these in eBay - seems like a pretty decent deal! Most common criticism seems to be the price of these things but at this price that doesn't seem too valid.
"Warranty:
Most products carry manufacturer's warranty. Warranty period varies between manufacturers. Most products carry ONE (1) year warranty; However, some parts can have warranty between 30 days to 3 years. All warranties are offered by manufacturers. For more details, check manufacturer's website. Warranty is subject to manufacturer acceptance only.
"
Plus US$19.99 shipping.
So basically $130+ for second hand Beats headphones, with no box, from an American Ebay seller, and no local warranty.
Good luck.