Old Dark Hyperpigmented Scars. Need Questions Answered. Atlanta, GA

i have used many things to minimize the appearance of my scars.the scars are very dark and nothing has helped(see pics). i have used chemical peels like lactic and glycolic acid, a Co2 laser as well as many strong bleaching agents . i also have 2 old chicken pox scars and a scar that is the same size as the chicken pox scars but is raised(not pictured).
i need an estimate on how much it will cost to remove these scars as well as the procedures that will be most effective.