Wow, it's been a struggle trying to get a hold of one of these Battery Grips for the Canon EOS 550D a.k.a. T2i. This is the OEM Canon BG-E8 part number which I could not find in stock on Amazon, Adorama, B&H Photo Video. Much props to the guys at Calumet San Francisco for tracking one down in their San Diego store and having it shipped. This grip definitely makes holding the Canon EOS 550D alot easier, especially since it's front heavy from a lens.
A must have piece of equipment if you own a T2i, not just for double the battery life, not just for the flexibility of using Eneloop batteries, but for the stability it can add to your shots. (Not to mention making it look a bit more like it's bigger siblings...). The problem is even on eBay you won't find USA sellers carrying this item. The best bet on eBay is to order the OEM versions from overseas. You can find the BG-E8 battery grip for the Canon EOS 550D / T2i available through this link - Click Here.