I usually prefer newegg.com, if Newegg has what I want, as Newegg prices tend to be better, and their computer related selection, my area of interest, wider. But I don't hesitate to go with Amazon if their price is better or they have what I want and Newegg doesn't.
I recommend Amazon.
And no one can guarantee that a product will stay OK, nor does whom you buy it from have much to do with the chances that it will stay ok.
Thank you so much, and thanks to all the others who’ve helped.
I can’t find any warranty info but I assume the product comes with at least some basic thing from Sony (the manufacturer). If I had purchased from a brick-and-mortar I’d probably be tempted to buy an extended.