It all depends on your skillset. Right now the cabinet is fully original, yet faded/damaged. This is the base worth. If you replace the side art with proper ones and fix some possible small issues, you will own an authentic "restored" cabinet, with increase of value. Here comes the risk: what could be a very nice restored (expensive) cabinet, is easily ruined by poor workmanship or materials. If you don't do it right, the value will suffer.
As for the side are, the ebay guys (usually) got the right sources and materials to supply a very good match to the original. You can have it made locally, but make sure you get the properly matte laminated polymer vinyl stickers at least.