The general rule within the tattoo removal industry is that what ever it cost (based upon a capital city professional tattoo parlor) to get a tattoo put on, it will cost 4 or 5 x times to remove it. Thus if a tattoo cost (for instance) $150 to get put on, it will cost you $600 or $750 to remove it.
Of course the price will be dependent on the number of treatments needed. There are exceptions to this rule depending on many factors, this is just a rough guide.
Multiple treatments will be required: sometimes a minimum of 4 and sometimes up to 12+