The Zeikos ZE-CBG7D is a aftermarket battery grip for the Canon 7D.  According to Zeikos, the ZE-CBG7D uses the same mold as the Canon battery grip.  The most attractive aspect of the Zeikos is the price.  At $80 before shipping costs, the ZE-CBG7D is about half what you would pay for the Canon version.

At first, I was skeptical how it would look and fit.  I was pleasantly surprised.  The fit and finish is good.  There seems to be some gaps (as you can see from the pictures) but overall it feels like a connected piece of the camera.  Like the Canon version, it also has a tray for six AA batteries.  This is great if you are in an area where you cannot charge the stock camera battery.  I have only been using the grip for a couple of days but I can say it works, feels reasonably good in my hands  (I have big hands) and makes shooting in portrait mode much easier. People with very small hands may have some issue holding the Canon 7D portrait style.

If I was getting nitpicky, the texture on the grip is not as nice as the Canon 7D. Also, the gaps on the sides are a little to big to call it a “perfect fit”.  However, for the price, this is a great deal.  If you are interested in buying the product for your Canon 7D, check out the Amazon.com links for details.