I saw this for $5 off in the Costco ad - and it turns out it's both in store or shipped with free delivery.
This brand is extremely popular in the US - 5 star reviews on Amazon with 68,351 reviews submitted. (https://www.amazon.com/gp/product/B01NCJSM2T/ref=ox_sc_act_t....)
I am not super picky about dishwashing tablets but whenever I've got these in past Costco sales they seem perfectly good.
At 25 cents per tab in a 90 pack, this is cheaper than the lowest price in the Fairy deal, so Costco members who don't get the ad emails might like it, especially with the free delivery if you can't be bothered going to the warehouse.