Saatva is having a 4th of July sale with discounts on its mattresses, with some outlets reporting savings of up to $1,000. However, the exact discount amount is unclear, with reports ranging from $500 to $1,000 off, and one outlet stating a maximum discount of $625. The sale is part of a broader trend of 4th of July mattress sales, with other brands such as Serta and Tempur-Pedic also offering discounts.