Can't edit my original post, but it was going in and out of stock yesterday (and Costco seems to just remove the item entirely from their site when it's out of stock for some reason, though it stayed in my cart), but I was able to order a few last night.
Should have mentioned that Shipping and Handling is $9.99, and then there's tax as well.
There's also a $50 off $500 coupon by Costco that some people got, I was able to chat with them and get a code, though it only works if the base price is over $500...
And some B&M Costco stores seem to have the sale price in store, but the one near me did not (though I picked up a few in store anyway until my order arrives, and then I can return the new unopened ones that come, item number is the same as in store).
Going to put one in a bit later, hoping the WiFi connectivity and smart features are at least usable, but I bought it more because it's a 8000 BTU unit for $170 or so after tax and shipping, could have gotten something smaller, but a 5000 BTU unit is going to cost at lease this price anyway, and I'd rather go a bit higher than I need...