Others Will Follow. You Mark My Words
This seller is obviously delusional to take that sort of mark-up, spelling errors aside.
That being said it doesn't take a rocket scientist to figure out there is money to be made on this Dial/Henkel Persil now sold in the USA.
When you consider what persons were paying for Persil from Miele and other American sources not to mention having it shipped from overseas buyers ten dollars or so (depending upon tax or not) is cheap. Now factor in some persons for various ethical or moral reasons won't set foot in a Walmart, and or one isn't located near them....
Shipping costs obviously would be a factor. While don't think the large bottles will fit a USPS flat rate box, the Duo-Caps probably will easily.
That is just eBay. There is also the potential for private sales via say a Craigslist or similar.