Petsmart sales on National Geographic Canister Filters (Eheim Ecco)
National Geographic Canister Filter's are on sale now. To get the best price you would want to buy them online using the in store pickup option. Not sure when the sale ends but I wouldn't be surprised if today is the last day. These filters are just relabeled Eheim Ecco canister filters with darker gray/black colors (which I think looks really good).
National Geographic CF30 (Ecco 2232)
On sale for $54.99 - 20% in store pickup - 10% online = $39.59
National Geographic CF50 (Ecco 2234)
On sale for $64.99 - 20% in store pickup - 10% online = $46.79
National Geographic CF80 (Ecco 2236)
On sale for $74.99 - 20% in store pickup - 10% online =$53.99
Also, if your order is over $100 you get an extra $5 off.
I also saw a Fluval Spec 5 on sale for $50 in the store when I picked up a couple of these filters (priced higher online). I currently run a CF80 on a 29 gallon tank (which I picked up a few months ago for $70 and thought I got a killer deal!) and yesterday on this sale I picked up a two CF50's for a couple of 20 gallon tanks I have.