Trying to find the lowest price for your choice item could have you seeing red. But don't fret. eBay's ( EBAY) RedLaser will help you. Know exactly what you want? Use the app to scan barcodes. It will tell you where to find the cheapest price. I tried scanning my Beanie Baby. Those still exist, by the way. It looks like you can get Floppity the Bunny for 99 cents these days. (At 16 years old, I guess she's not a baby anymore). Even if you don't have the barcode handy, RedLaser can help you find what to buy. Using the voice-activated search function, I still found Floppity! Possibly the best feature of this app is that it stores your loyalty cards. Scan it so you don't have to bring that CVS ( CVS) card everywhere. Don't let that precious wallet space go to waste. RedLaser is a badly kept secret. As of October, it had been downloaded 22 million times! The free app is compatible with iPhone, iPod touch, and iPad, but requires iOS 5.0 or later. It's also available on Google's ( GOOG) Android operating system as well.