I'm thinking of paying a model to do some tattoo shots, but I'm not too sure how much money to offer her. Any suggestions?

Do you have the tattoos or does she?

What are you going to do with them?

Contact some models with ink that you want to work with and ask them their normal rates if they do not already have them listed.
Or place an ad and offer TFP/TFCD. Someone will be interested.Especially if it is just for art or non commercial use. My best ink shoot was a former Suicide girl. 2 of her shots are now in a gallery and her shoot didn`t cost me a cent.

Thanks for the replies. She has the tats. I'm mainly wanting the shots for my porfolio, and personal enjoyment. I'm not planing on selling the prints.