Go here Toyota Prius 2004 ~ 2009 NHW20 Interior Accessories :: Sigma Automotive Its listed as EV Switch for $79. Just say you want one for the 2009 Prius when you check out. It comes with everything you need except for some extra wire and wire taps/splice.
Yeaahhhh.. I know.. I just didn't think 92 something dollars isn't worth it for a switch. I'm trying to make my PHEV look more legit.. I just hoped I could get an EV switch for cheap(relatively)
Have you considered the home-grown version? It works exactly like the OEM switch (just doesn't look like it) and you can't beat it for being cheap.
I don't think you will find an OEM button for cheap. Even if someone were to sell their used button I'm guessing they would still want about $50 for it. Thats what I would want for mine if I was going to sell it. Good luck finding one cheap. They do pop up every now and then here. I hate to suggest ebay but you might want to look there too.