In general, LEDs are quite replaceable, although ignorant clerks may tell you otherwise. You may have to look a bit for some. DH bought a number of individual LED lights from a solar power supplier on line, 2 of which became eyes for a sculpture of mine. If you buy LEDs from a major hardware chain, check, but you are likely to be able to get screw in LED sets that are readily replaced, after they go.....which will be a long time.