In case you enter a discount code during checkout that doesn't exist or isn't currently active, then you can see the message: “Unable to find a valid discount matching the code entered”.

To use the Stock Mfg coupons on their website, you need to meet the conditions:

•  The items you choose must meet all coupon requirements as explained in the Terms and Conditions.

• The coupon has not expired. 

• The seller uses the Stock Mfg checkout system or a customized checkout system that accepts the coupon.

It depends! Normally, the percentage that you can save with that Stock Mfg Coupon will be shown right on the page, so you can see if it is applied sitewide or not. However, once you are not sure, try it right on their's products you want to buy.

Our advice for you to use Stock Mfg Coupon effectively is to choose the right day.
Like thousands of other consumers, the time of promotion is when they choose to
shop at Stock Mfg, so take advantage of coupons released on those days to save.

Gift Cards from Stock Mfg are usually offered on major discount days or to loyal customers. If available, it will be shown. Let's check the coupon list.

At the time of updating, Stock Mfg has not applied Student Discount all year round yet. Check the official store and reach out to the customer support team to be clear.