Need a free price comparison while shopping out at the store? Call 1-888-Do-Frucall (1 888-363-7822). One thing to keep in mind. This service only works if your number is unblocked.

NYTimes.com:

“FREE PRICE COMPARISONS As you head out to the seething malls for holiday shopping, your cellphone can do more than tell your family you’re stuck in traffic. It can also save you money.

As you inspect something you’re tempted to buy, dial 888-Do-Frucall (888-363-7822; leave off the last two L’s for — well, for now). When prompted, plug in the bar code on the package. After a 10-second ad, a voice is usually successful in identifying the item by name (“Luv’s Diapers Value Pack, 208 Diapers Variation — not available used”), and provides the prices from three sample online stores.

It’s a disruptive little technology — doomsday, really, to a “we’ll beat any price” retailer. Frankly, the whole comparison concept seems a little unfair: How is a physical store supposed to match the prices of online outfits with much lower expenses for rent, clerks, taxes and so on?

Still, Frucall may let you know when you’re about to make an expensive mistake, and occasionally provide ammo for negotiating. “