Use reward programs - check out such products as Swagbucks and Shopkick, these companies will give you special discounts and gifts for filling out surveys and shopping around.
Free Shipping - always look for free shipping coupon codes or for the minimum free shipping amounts to score this discount.
Contact customer service - many times by chatting with a customer service representative they will give you extra discounts to complete your purchase.
Enter multiple coupon codes - combine multiple coupon codes at checkout to score the biggest savings. Also referred to as stackable coupons; combine a sitewide coupon with a free shipping code.
Avoid dynamic pricing traps - clear browsing history and logout of social media accounts to avoid being targeted with higher prices.