When you’re making a purchase at a store’s checkout counter, you may be invited to sign up for the retailer’s store card and promised an initial discount on what you’re buying, plus future perks.
“Ok, why not?” you think.
Here’s why not: If you ever end up carrying a balance on that card, you could end up paying through the teeth for your purchase.
A new study from Bankrate, which surveyed the interest rates of 108 store cards from leading retailers in early September, found they have reached a record
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