Costa Del Mar currently lists the 5% off promo code at the top of this page as the lead offer, and it is best for you when you are buying regular priced items and not using any other promotion. That promo code takes 5% off your order but cannot be combined with other promotions, so it suits straightforward carts of full price sunglasses or accessories. For shoppers with sale items, targeted category sales often beat a small promo code.
Big spenders over $250: Use the $50 off purchase over $250 deal when your cart is at least $250 and contains items eligible for the deal, because it is a fixed $50 saving. For example, on a $300 regular price order, the $50 off reduces the total to $250, while the 5% promo code reduces it to $285 (5% of $300 is $15). The $50 off saves you more on that order, so choose the $50 off deal for carts of $250 or more.
Buying regular priced sunglasses or frames under $250: The 5% off promo code at the top of this page is the relevant choice for full price items when you are not already using a sale price. On a $200 regular price purchase, the 5% promo code gives a $10 saving and leaves you $190 to pay.
Shopping sale or clearance styles: Prices as marked in the Up to 50% off clearance and the 30% off sales are already applied at product price, so compare the sale price against what a 5% code would take off the non sale price. Often a marked down item at 30% or more will be a better saving than applying the 5% promo code, and the site states sale prices are final and require no code.
Buying prescription eyewear or lenses: The 30% off prescription eyewear and 30% off prescription sunglass lenses apply directly on eligible prescription items and are likely to save more than 5% on those categories. Use the category sale price when it applies, because the lead promo code cannot combine with other promotions.
Small purchases and accessories: If your cart is under $50 and includes best seller accessories from $10, the marked price on sale items can be the cheapest option; the 5% code may only shave a small amount from full price and will not apply to prices already reduced where the site shows prices as marked.
First time customer or newsletter offers: Signing up to the newsletter gives special offers and promotions but is not the page lead and is only relevant if you want signup access rather than an immediate code for checkout.
Our records in the 12 months to October 2026 show 28 offers listed for Costa Del Mar, only one percentage promo code in that period and the biggest percentage code was 5% off. The biggest percentage sale in that time was up to 50% off, and our team recorded 1 checkout test across 1 offer in the 12 months to October 2026.
When you decide, calculate the final price each applicable offer gives you on the same cart and take the option that leaves the lower total. If an offer here states it cannot be combined with others, apply only that single promotion at checkout.