Well, it worked. The gal at the checkout was very nice, but had to call a manager to verify.
She looked online, and didn't see the Chi anywhere...which we already know.
I took a picture with my phone, and brought that in. I think the reason I got the price, was that because of the camera phone, I had a date on it that had shown todays timestamp on it...and the PetSmart website logo.
Good luck if anyone else tries, but I'd think this is a very iffy deal now. I think their store policy is you have to be able to pull up the webpage physically and verify the price...but for some reason I got the price anyhow.
Must be all that charm. Hah.