In an age of swift digital access to nearly any store, it is difficult to resist the urge to buy expensive things. The shopping spree must eventually end as your wallet starts to run dry. But the worst thing is finding the same items you’ve recently purchased at better prices elsewhere. Unless you’re scouting for deals during the holidays, most retailers do a lackluster job advertising discounted products. Fortunately, app developers have taken note of this potentially huge user
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