Inked Jellies, have you gotten a tattoo retouched?

I’d just like to hear people’s experiences getting tattoos retouched.

How much did it cost, relative to the original price/size of the tattoo? Were you completely pleased with the result?
Was there a noticeable discrepancy between the darkness/color of the original and the new ink?

I’ve got a tattoo that I’d like touched up very slightly. It was my first big one and in a very tender spot and I was so relieved when it was “over” that I didn’t even notice that the artist didn’t completely copy my design. Mine would only be a touch up in black.