MMM not too sure of any reputable tattoo parlours in the West End, but I think you may be looking at 150-250 dollars
Make sure you find a place is clean, uses a firing oven on the equiptment, opens sterile needles in front of you and puts ink in little caps that they dispose of in the garbage at the end of your tattooing session.
Don't cheap out or mess around....HIV and Hep are out there...
See below for my body art.