Prepaid Gift Cards Informative - One More Thing About Those Gift Cards
By now you are aware to watch out for [sometimes] hidden charges against the gift cards you buy like  A deduction if not used within 30 days  extra deductions if a person buy an item with a gift card and is then charged extra for a return of the item [usually $5 - $10 deducted from the card automatically].
There is a more important aspect to watch out for:
Do NOT buy a gift card from a cashier's stand [you know; that wire stands at the checkout line that holds various gift cards] that DISPLAY A SERIAL NUMBER IN THE CLEAR and are not covered by a black or silver strip.
If the serial number is visible, an employee [usually a cashier] will copy down the number and after someone purchases the card, they may manually enter a deduction for $5 or $10, put the money in their pocket. [The higher the amount loaded onto the card, the more likely it is that they will pocket even more.