From Ninja Website, $169.99 sounds a great deal, offer 10% off to new customer but for this blender is not eligible which is a shame but you can get cashback from ShopBack upsized to 25% of limited time (check term & conditions, normally tax, voucher, store credits are excluded), I can't find capped value so I assume is NO.
If uncapped, then price @133.87 after cashback, please correct me if I'm wrong.