Go to
Early2Bed, the store is designed with women in mind and the products are all high quality. They describe exactly what you're getting with each product, it's features, dimensions, etc. They pretty much have something for everyone in a variety of styles and price ranges. I've used them in the past and have been very pleased with the service and *ahem* merchandise.
There are other online stores out there, but this is the best I know of. Good luck, and I'm sure your wife will really appareciate the gift!
BTW...It's next to impossible to find anything on ebay, so I wouldn't waste anytime looking there.