All up and down Matthew Street (where the Cavern is) there are bars, shops, cafés and even a hotel to do with The Beatles (Hard Day´s Night Hotel, rooms starting at something like £500 a night!). I think there´s a Lennon´s bar and a place called Rubber Soul as well.
Although it´s to be expected, I think it´s a bit pathetic how people try and earn money so much from The Beatles name.