woot.com had a 6.5 prelit for around $40 in their "woot-off" today. I can't find it now though, so it may be sold out, but you can try there as it may pop back up.
It depends what you mean by a good price and the level of realism you want in a tree. Balsam Hill, which has some very realistic looking artificial trees and many in narrow shapes, is having a clearance sale right now until January 1. But you pay for the realism, and the trees will still run $259-499 with free shipping.
My mother got a new tree at Lowe's this year for around $60. Lights change colors, and it looks pretty good. I wouldn't describe it as realistic, but worth much more than she paid.