Each pack shows a struck-through total: $358, $537 and $1,074. The page also gives a regular price of $79 a bottle. They cannot both be the normal price.
$358 over two bottles, $537 over three and $1,074 over six all work out to $179 a bottle. At the stated $79 regular price, the same packs would be $158, $237 and $474.
So the was prices are measured against a figure $100 above the regular price the page itself lists.
We are not saying there was bad intent. It may be a leftover reference figure. Whatever the reason, compare packs using what you actually pay and the $79 regular price as the benchmark. If the reference matters to you, ask the seller what it represents.