I recently noticed that too... that computer products are available cheaper in stores than online now. For products such as hard drives, I generally prefer to buy from stores, since if there is a warranty issue, you can deal directly with them, and there's also the drive being damaged somehow in transit, since it is a sensitive product.
But yes, as said above, not all latest products are available in stores. Many of them aren't even aware of such latest products. They are such big and reputed shops, and still they don't have much knowledge of what's latest, and sometimes even the technical knowledge about products.
When I had gone to buy a hard drive for my PC a few years ago, I had gone to a reputed shop here. He was giving me an older version of Seagate, and he wasn't even aware that there was a newer version, even though he regularly visited the Seagate site. I showed him the latest version on the Seagate site, and then he got that model from somewhere. He said that he got to learn something new.
A month or so back, I went to inquire the price of Logitech wireless mouse M235. None of the shops had that model, and apparently weren't even aware of it. They were trying to sell me an older model.
