My DH has 3 tattoos. The one on his right upper forearm is a beautiful lion and grass and flowers, it is the symbol for Leo. It is about the size of a small postcard. It is colored. It was (I think) $200. The one on his leg is of the grim reaper, very cool btw, and it is just black and I believe it was $300, it is the size of a business letter envelope. The one on his other forarm doesn't count, it was done by a friend's brother and he messed up so he got a discount...
ETA....he says the ones that cover your back could run into the $1000s depending on the detail. Yes it hurts, but I have heard many can block it out after awhile, and I have heard that many cannot.
My DH says look at it this way, you are paying for someone's art to be forever a part of your body...