PetSmart is a corporation through and through. As far as I know, there are NO franchises, but if you like I can ask the local district manager next time I see him. Heck, I'll just ask my store manager since I see her about every day.
All the PetSmarts around OKC honor the website price, but require tangible proof like a printout. It's really a corporate policy.
Also, it's been my experience in Texas, Arkansas, and Oklahoma that PetCo is usually more expensive for everything but cat furniture. o.o; Except they have VERY good clearance sales.
((Of course, I've heard rumours of PetSmarts selling mixed-gender and feeder rodents which is COMPLETELY against the corporate policy. One sex per store, no feeders, all pets. I wish I could check those out in person. I hate live rodent feeding.))