The cost is on par (and sometimes under) frozen pizzas from the grocery store. The quality is okay, if you have a fairly low standard for what you want out of your pizza. The thin crust is utterly terrible. Honestly, I'd rather get a frozen pizza and cook it myself given the option, or going literally anywhere else for pizza (except maybe Little Caesar's).
Dominos is very cheap if you order one of the items they have on perpetual sale, but very expensive for the quality otherwise.
In the US, they're known for having lots of coupons and specials, and being cheap. The cheese has a weird consistency, to me at least.
They're the McDonald's of pizza restaurants.
Pretty sure I've never had a maccy D's either, but I get what you're saying, thanks.