The largest pack is $294 with $594 crossed out.
The arithmetic
$594 is six bottles at $99. The page describes struck prices as the seller's comparison figure. The real price is $294, or $49 per bottle, about $1.63 a day over 180 days.
The trade-off
It is the lowest price per bottle, but a six-month commitment against a 60-day guarantee. If you are unsure the capsules suit you, a smaller pack lowers risk. If you already know they do, the larger pack is the cheaper way to buy. It also carries the Most Popular tag, which is a marketing label.
Educational note: This guide is general information based on the Quiet Nerves page. Statements have not been evaluated by the Food and Drug Administration. The product is not intended to diagnose, treat, cure or prevent any disease. Individual results vary.