Unless I can buy it at Bed, Bath and Beyond, Walmart or As Seen on TV store in the mall, I won't buy it. Bed, Bath is the best place to buy, no questions asked if you return.
I learned the hard way about buying over the tv with the Steam Mop. Infomercials are not to be trusted. If you can't get it at the store, don't bother, but at least you won't have to worry about your cc being over charged or problems returning the item.
Just keep your receipts. That's all I'll say.