WTS LNIB Native Instruments Maschine MK2 with 1.8 software, open registration in Phoenix, Arizona For Sale

I have a LNIB Native Instruments Maschine MK2 for sale/trade. This is the latest model with the 1.8 software upgrade and color pads. The registration is open so the next owner can register the software under their name and get all the updates from Native Instruments. If you are familiar with Akai MPC's then look no further than the MK2. They are perfect for hip-hop, drum & bass, dub step, and other studio production projects. If you are reading this then most likely you are already aware of what these machines can do. If not, here are links to a couple youtube videos to show you what it can do.
http://www.youtube.com/watch?v=IcMOrx0pNeE
http://www.youtube.com/watch?v=LUnV8ZDz_DA
http://www.youtube.com/watch?v=0EEcwA2yXpA
I am asking $500 OBO, they retail for over $600 including tax/shipping.
Only interested in trading for a new in box Verizon iPhone 5S with 64 gigs ($399 with new contract). If its cheaper for you to upgrade your plan and trade me the phone straight up, that's fine with me.
Any questions, please let me know.
Thanks.