I would definitely recommend Club Tattoo if you're looking for a tattoo shop on the Strip. Friendly, approachable staff and relatively good prices (for the Strip).
Like everything else on the Strip, it's a bit overpriced (minus one star). I get it. C'mon folks. Have you seen the prices at a McD's in one of the casinos? I rest my case. That being said, you can expect to pay double what you would at your local shop. Their minimum is $100. My friend and I got 2 small tattoos around that price. Chris worked on us both. He's a nice guy with a good attitude and very helpful. All the staff there was cool and not hovering. They have jewelry and clothing too.