It has no color and is very light. So about how much would this tattoo removal generally cost?

I have a tattoo (it’s the alkaline trio symbol, if anybody knows what that is) that is about three inches big on my forearm. So far it’s just the outline. I want to get it filled in with red, but I was just wondering if anybody knew a ballpark of what that would cost?

I plan on getting a phoenix tattooed on my back shoulder, It is going to be a little bit bigger than my shoulder blade, pretty much taking up 1/4 or a little less of my entire back. It is going to have many different colors and shades. So my question is, how many hours will it take if i don’t have to take any breaks or anything and how much would it cost for a good tattoo artist to do it?