For Sale: Queen size Kingsdown Royal Posture mattress

I bought a brand new Queen size Kingsdown Royal Posture mattress on November 15th from Sleepys, but am now moving back in to the city and will no longer need the mattress, so would like to sell it.

It has only been used for 3 weeks, with a mattress cover, and is in perfect condition.

See link for mattress details: http://www.sleepys.com/Products/Kingsdown

It is a great mattress, firm, and very comfortable.
I would ideally like to sell it before Christmas. Cash only. Pick up from Park Slope. I still have the plastic sheeting to protect the mattress during transportation.
Price = $250