Don't replace, reglaze!
You don't need new frames if your prescription has changed. Frames can usually have the lenses replaced two or even three times before they wear out, more if it is a high quality pair of specs. We'll put new lenses in frames others won't. Distance, reading, computer, varifocals and bifocals (if you are one of the few still wearing them) all are possible in either budget or premium offerings.