Amazon offers the Huy Fong Sriracha Chili Sauce 28-oz. 6-Pack for $17.94. Add it to your cart via Subscribe & Save to cut the price to $17.04. With free shipping, that's $16 under the lowest total price we could find for this quantity elsewhere, although we saw it for $3 less via Amazon Mom three weeks ago.
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments. Not using Subscribe & Save? Instead, scroll down to "Special Offers and Product Promotions", add three free samples to your cart, and pay $17.94 with free shipping via Amazon Prime. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $14.64.)