http://www.target.com/s?searchTer...categories

I purchased the Britax Marathon Classic for $140 after coupon TGTYCVMU which is a $10 off $100 coupon. This seat sells for $195 regularly.

EDIT:
Coupon TGTYCVMU appears to be dead but I have found another one by googling (specifically coupon mountain) $5 off $50 plus FREE SHIPPING. Not as good as $10 off $100 but it is the best I could find right now.