Update, 11:30 p.m.:
The Rangers have released addional information on this here.
Steiner Sports is selling the old seats from Madison Square Garden that are being replaced during the renovations.
A single seat is going for $549.99 and a double will cost you $899.99. They have both teal and purple.
...i guess if you've had season tickets for a long time this is something you'd be interested in, but to me there's nothing special about these seats (purple and teal? Yuch). I was really interested in a getting a Shea Stadium seat as they were a bit more unique in my opinion.