Not sure of the retail I believe it to be around $50-60? I've seen them selling on eBay for around $20.00. Dhgate has some with good prices however some are fakes so you have to be careful.
i had a rep from motorola contact me after i was selling them on ubid. he warned that all the ones out there are fakes and motorola is in the process of shutting down sites that sell them (here in the U.S.)
i don't believe that they are all fakes, dbl sells them so i highly doubt dbl is in the bootleg industry. their is fakes but, moto has two factories in china so they will never stop the fakes lol.