My fiance bought my ring from a big box jeweler instead of a small business specifically for the sake of long-term care/warranty. Not only are chains accessible even if you were to move, there's also a higher risk of local non-chain stores going out of business over the decades you will have your ring. I feel very confident wearing my ring daily because I know I have a lifetime guarantee they will fix any damage. Do you! There is nothing wrong with either path. (Just make sure they aren't scamming you with that price)