They do have an offer on amazon for £7.50 on platinum oxi-action for whites https://www.amazon.co.uk/Vanish-Fabric-Remover-Platinum-Crystal/dp/B01NBI4C2L/ref=sr_1_1_a_it?ie=UTF8&qid=1529675846&sr=8-1&keywords=vanish+platinum+for+white. Subscribe and save is £7.13, this would be helpful for non costco member. Voted hot on your deal anyway.
Clue in the product name ...
Do others find that this seems to disappear quicker then you expect? Like it evaporates?
Not the same, this is Platinum and it goes £12.99 in Amazon .. https://www.amazon.co.uk/Vanish-Fabric-Remover-Platinum-Action/dp/B01N7FQEJV/ref=sr_1_1_a_it?ie=UTF8&qid=1529660992&sr=8-1&keywords=Vanish+platinum+1.41kg
Only £6.77 for bigger 1.5 kg tub at Amazon https://www.amazon.co.uk/Vanish-Action-Crystal-Fabric-Remover/dp/B004HL2XZ8/ref=sr_1_6_a_it?ie=UTF8&qid=1529660692&sr=8-6&keywords=Vanish