Theres a video rental place down the way from me in Vancouver, BC. First, Vancouver is expensive as hell. Our average 1 bdrm is roughly 3k a month. This guy has a prime location, in Vancouver, on a busy street, with a video rental store. Who rents movies these days? Maybe some, but surely not enough to keep him afloat. It’s not an adult video store either.
See if your ISP can set their router to bridged mode, then you should be able to use your own while plugged into their equipment. It will turn all the functionality off on it so you won’t be doubled natted and traffic should flow properly.