If you figure out a design concept you like, a good tattoo artist should be able to draw something up for you. I would resist selecting something off their wall. If you come up with the concept, it will be unique.
In my experience, saving money on a tattoo usually means getting a low quality job, that will need correction in the future. A tattoo is permanent. You can't decide to return it if you don't like the end result. It's your body, your choice, but I don't make this kind of decision lightly.