Received this email from Craig Anderson today:
Hello.
Looking for a used upgraded bag for my son.
Interested in the Marmot Plasma 15 sleeping bag.
Would you accept $300.00 shipped.
Please let me know.
We'll purchase today.
Thank you.
Craig and Sam
http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=96920&skip_to_post=821934#821934

It appears that "Craig" recently sold a Marmot Plasma 15 for $375 on eBay.
Positive feedback rating Real good!!!++++++++++++++++++++ Buyer:
p***v ( 24Yellow star icon for feedback score in between 10 to 49)
During past 6 months
MARMOT PLASMA 15 SLEEPING BAG "900 FILL POWER" LONG /LZ (#221560972970) US $375.00 View Item