I was in the market for a new vacuum for my new hardwood floors. Dyson is currently offering deals through their authorized dealers. It just so happens Lowes carries this particular model at the sale price currently of 449. I was able to combine the Lowe's 60 off 400 coupon hanging around SD, search.
I picked it up for 389 plus tax free pick up in store or shipping if not available at store.
Item #: 809702
Model #: 214730-01
I'm sure this will also work on other models, coupons permitting.
Known coupons. 60 off 500, 40 off 200, 20 off 100, 10% search forums for info on how to obtain these coupons.