It's about $10 cheaper than that from Amazon or in stores, but sure. It adds weight. Neither are a large enough weight to impact your carrying of an iPad (the smart cover is nearly 5 oz! :), and if you lift the iPad up to look at something, you aren't also lifting the case.

I'd say a better dimensional concern to have is that when you're using it as a case, it more than doubles the device thickness.

One of these products is a case, stand, and keyboard, the other is a keyboard accessory. I tried to explain why one is better than the other... this makes my iPad feel like an awesome laptop when I bring it along. Apples and oranges.