20D Battery Grip

I've been looking online for used battery grips for a Canon 20D, but have not been finding anything that only offers $15 off its original $169 price.

Since the 20D and the 30D use the same grip, I guess the prices aren't coming down on them.

Anyone have any other ideas on how I can avoid spending so much on it?

(PS - I bought a battery on E-Bay for 1 cent the other day. $9 shipping, but still a good deal I think.)

You probably saw this already.

http://search.ebay.com/canon-20d-batter ... 3QQxpufuZx

I tried some of the online price locators and the cheapest I found was $150. I would think ebay would get you the cheapest price. Bid on a couple of auctions.