I bought mine from them after being a little concerned as well. The concern was not necessary. They were quick on the shipping, and the item was as described. Just know that if you require any warranty service you have to send it back to them at your expense. Warranty is issued in Hong Kong. I took the gamble because they had the best prices and the color I wanted. Sony products have in general held up well for me. So hopefully I wont ever need the warranty service. It's only for a year anyway.
I figured I'd have to send it back to them for warranty service if I need any but because of their lower prices it might still be worth buying from them. Sony products do hold up well..my wife has a Walkman that's about 8 years old and it still works perfectly and gets decent battery life...maybe not the 50 hours it originally got but still pretty long. I checked them out online too and they seem pretty reputable.