While I’m not sure how much money you can save with this information, I recently learned that Target has a numeric system for letting employees know which products are discounted:
*Items with prices ending in $__._9 are the regular price
*Items with prices ending in $__,_8 are discounted
*The small numbers in the top right corner of the price tag indicate the percentage discount you’re getting off of the regular price (for example, if you see “75”, that’s 75% off the regular or original price)