Generic brand cord (not official Sansa fare, but neither Sansa nor anyone licensed by them that I can find offers single cord replacements, so what can you do?) with predominantly good reviews both on Amazon and on the AnythingbutIpod.com forums that I initially got the link from. Considering the cheapest I''ve found "official" (licensed by Griffin) Sansa cords/chargers was $50 for a charger/sync cord + FM transmitter kit, this is terrific.
Sansa c100/c200/e200 series Charger/Sync Cord