While I'm tempted to say skip the major department stores and check out a discount store instead, not all of them actually offer good deals. There is a chain of stores called "Ollies" which has been popping up in my area. They supposedly sell marked down stuff, but their "marked down" prices are just as much as the full priced items in department stores.
I don't really see much of a need to spend an arm and a leg on an expensive cake pan, personally. Even a cheap dollar store pan will work fine, it's more about the cake itself and the ingredients & cooking times. Once the non-stick coating starts to go on the pan, it doesn't matter if it was an expensive pan or a cheap pan, you still need to junk it.