The Garmin VivoActive 4 and 4S are on sale for $270 at Garmin.com. I received a pop-up ad in Garmin Connect on my phone that brought the price down to $262.49. I don't know if this was a targeted ad. I have a VivoActive 3 now, so maybe that had something to do with it. If you have Garmin Connect, it might be worth a try to see if it pops up for you for the additional discount.
This seems to be the lowest price this watch hits. It is usually around $300 and coupons don't always apply at other vendors. Shipping is free, but you will have to pay sales tax.