I bought this after comparing very similar, but more expensive options, sold by the same retailer on Amazon, which appear to be the identical unit but this has an additional item, the remote. The reviews were overwhelmingly positive. Looking at the images it certainly seems identical. It is early days but I haven't taken it off since I have had it, it does give a good balance and isn't too heavy, which was a concern. I really bought it for the 2 batteries, still cheaper than a single Canon original, but the grip does help, and so far I like it a lot. Time will tell how the batteries bear up, but so far they work fine and I used it for an extended time in live view mode and the EOS utility /USB cable to control the camera... a real battery drainer, but they seemed to hold up well. The cabled release button works Ok too, I used it for some long exposures for star trails. It helps avoid shake on a tripod, and it has lock function so you can lock the camera open in Bulb mode. The Canon original version is around £8 at the time of writing, so its not a huge bonus, but it is something i have found useful already.
For the price, it looks good value, if it stands up longer term and the batteries keep holding charge it will be a bargain.