It all depends on subject matter, size, location, time spent tattooing and a few other factors. The general rule is, you can't price a tattoo that isn't in front of you on paper.
Think a bit more about what specific tattoo you would like, and then visit you local reputable tattoo shop. You can speak to your tattooer about what your basic idea is, and from there I'm sure ye will find the artwork to match. It's only at that stage would you be able to get a price quoted on it.
If it's only something small, shop minimums generally start off between $50-$70. Basically, this means ANYTHING, will cost you a tleast that. But the small little ones will run close enough to that price. Generally, little flowers, butterflies, names etc. (once they're small) will all run you between the shop minimum and about $100. Anything other than that, it's completely subjective to the tattooer.
Best of luck with it.