Otticanet's headline offer is the Flash Sale with 10% off sitewide, which applies to all customers regardless of basket size. However, the brand runs several competing deals at the same time, and which one saves you the most money depends on what you're buying and how much you're spending.
The Flash Sale delivering 10% off everything is straightforward and works on any purchase. If you're after a quick discount with no minimum spend or restrictions, this is your baseline—a 10% saving on a $100 order would be $10, and on a $200 order would be $20.
The other deals on the page are category or discount-depth specific. The Up to 70% Off Sunglasses And Eyeglasses deal and the Summer Sale Up to 70% Off Eyewear Styles both promise steeper discounts, but these are floor prices rather than automatic reductions—you'll only see the full 70% savings on select styles that are already marked down to that level. On a $100 basket of sunglasses or eyeglasses, the 10% Flash Sale will likely outperform these unless the items you want are among the sale styles already discounted heavily. The Up to 50% Off Designer Eyewear Outlet works similarly: it applies only to outlet items, and the 50% figure is a ceiling, not a guaranteed minimum.
Your best approach is to add your items to the basket and compare what each deal actually saves you at checkout. The Flash Sale guarantees 10% off your entire order, which beats both percentage deals whenever less than 10% of your selected items fall into a sale category. If you're building a basket around sale items from the sunglasses, eyeglasses, or designer outlet sections, calculate the savings carefully: a $200 order where $100 of items qualify for 50% off (saving $50) and the other $100 qualifies for 10% off ($10) would save $60 total under a stacked scenario. But since only one offer applies at checkout, you'll need to see which single deal produces the larger discount in your cart.
Only one offer applies per transaction, so compare the savings amount for each option before you pay. The Flash Sale with 10% off is your safest bet for mixed baskets, but if you're shopping entirely within the sale categories and those items are heavily discounted, the category specific deals may win.