Battery grip BG-E2N for 20D, 30D, 40D and 50D.

I got this with a used camera and other accessories and I thought it would really be handy to have. The problem is, once I added it to my 50D and 150 - 600 Sigma, the added 10 oz. plus batteries brings the total weight to over 6 lbs. Not fun to lug around for 45 minutes. I can't reduce my age so I need to reduce the weight. It works great and is so much easier for vertical shooting due to the shutter button placement. I didn't test it with AA batteries but am assuming that shouldn't be a problem.The asking price including fees and postage is $35 to anywhere in the continental U.S.