I was looking to upgrade my backpacking tent last summer and "accidentally" bought two tents, so I have an extra. I was on ebay and bid on two different Sierra Designs tents and ended up winning them both.
I used this one once for a two night trip, worked fine. I liked both tents but this one is a single door and the other one was a two door so I decided to keep the other one, so this ones extra.
Its rated as a two person tent, but I think you'd have to be pretty friendly, its roomy for one person. I'm 5'11 and it works fine for me, but I think if you were much taller it might be short. Its roughly 4.5lbs, two poles. Its NOT the Lightning XT which I think is new for 2009. This ones khaki and white, with a khaki and yellow rain-fly.
I've seen a couple on ebay recently go for around $150-175, Found a few others online going for $199.
I paid $166 for it last summer. I'll let it go for $85 if you pay the shipping (I'm guessing around $10-12 at least thats what they're charging on ebay).
Here's a link with a pretty good description and specs.
http://www.gearzone.com/ProductDetails. ... click=5096