NooB Question: Why are WaterSense toilets so much cheaper than standard toilets?

[MrBen23]

Hey guys,
I am doing research because I want to buy new toilets for my house. I was thinking about American Standard, so I went on their website. After looking at their products, I noticed that the WaterSense toilets were MUCH cheaper than their standard, non EPA-certified toilets. Can someone enlighten me with the reason why?

Thanks in advance!

(1st post! Woot!)

[jadnashua]

It might be volume...many places are requiring water sense toilets. Read Terry's toilet reviews. Lots of comments re: AS stuff.

[Terry]

Normally the Watersense (1.28 or less) and the 1.6 are similar in price.