Another option would be eBay. I bought two different gel batteries from a company called Dvolt Batteries in California, $78 shipped, and I live in Canada.
I got a yuasa battery which is in it already for 98 bucks at a dealer... I called like 5 diff ones and that was a good deal. Yuasa's are pretty good. Also shspowersports.com has a yuasa for 121 and any other oem parts u might ever want waaaay below dealer cost!