This disorder is associated with several vascular, neurological, and skeletal problems including stroke, heart attack, clotting, mental retardation, eye abnormalities, and osteoporosis, amongst many other complications.
Tattoo tipping etiquette, in general, should hover around 15% for small tattoos and 20% for larger tattoos, but as with all tips, you as a customer ultimately determine the amount based on the quality of service and the work performed. Consider your involvement as well.
The cost of a tattoo depends on the location, size, color, how fancy the design is, and the skills and reputation of the artist, but individual tattoo studios can set their own prices. A small tattoo will usually range anywhere from $80-$100 dollars. Larger tattoos can cost up to hundreds or even thousands of dollars.