For new or expecting moms, my wife was just able to score this deal at Target. You just need to have a baby registry at Target and your registry completion coupon(15% off) available.
The Elvie breast pump is currently on sale for $424.99 at Target, down from $499. There is also a Target circle offer for 20% off any breast pump. You can stack with your 15% off registry completion coupon and get an additional 5% off with the Target red card. If your circle offer is missing, it should be in the baby registry category, you can call or chat to have them apply the discount manually, but it may take a couple tries to get a helpful agent, so ymmv if you cant find the offer.