How much does it cost for removal of polymastia and will it scar?

Here's the situation I have an extra nipple under my right breast and some breast tissue with it but it doesn't look extra because it's looks like it's part of my breast,how I noticed it was I lifted my breast and notice my mammary line is quite uneven within a few cm and it looks like I have a third breast,im not urging the situation because it's barely showing. Plus what's funny is that I haven't seen no sort of difference of growth.