The best time to shop for new shoes is at the end of the day when your feet are their most swollen and sensitive to shoe fit. Here’s a picture of a shoe which is a) too tight and b) too tight. Notice the blanching around the throatline. Notice how the widest part of the forefoot is lopping over the outsole.
Rule of thumb…if a shoe feels or looks tight in the store (especially in the morning), it’s probably not going to fit later, unless you have a shoe stretcher. Bottom line, a fabulous shoe on sale, that’s too tight is no bargain…trust me, they’ll simply collect dust in the back of your closet.