Anyone price motorcycle batteries lately?

I bought my kids some 125cc atvs for Christmas a few years ago. I've put 3 new batteries in one of them. I finally found an intermittent charging issue with it. I replaced all of the wiring and a new stator. I went with a new quality battery. The first 3 batteries I got were Amazon specials for maybe 40 bucks or so. The new name brand one was $160! I would have hoped for a better warranty on it but it was only 90 days.