Does it worth?

i dunno if any of u shares the same problem as i do. I have a oval-shaped conspicuous yellowish-brown mark adjacent to the rim of the iris of my right eye. One of my eye doctors said that this is some sort of pigmentation found on some people's sclera. I really wanna get rid of it as this does make my eye look abnormal. My doctor said it can be surgically removed with a high success rate, but since my mark is very close to the iris, therefore i may bear more risk than others. Should I juz leave the mark or go for the surgery? How much is the norm price for such surgery?