If you sell the lens, it looks to be the cheapest you can get for body only. Many people have their own lenses, or would actually prefer to sell the lens included and buy a different one based on their needs.
Could you use it without a lens?
Big heavy body (1.017KG), big heavy, expensive and limited native lens selection, slow frame rate, AF that is the weakest of all the latest mirror-less full frame bodies particularly in video where it hunts, wobbles and can't track anything. Underwhelming battery life. Plenty of reasons why this camera hasn't sold well.
Gotta agree, this is a step up from the A7III. Both are hybrid photo/video but the S1 video is head and shoulders above the A7III. This lens isn't much to write home about, but it's also not terrible as kit lenses go.
Try unlimited recording time? 4K 10bit? Soon to be 5.9k pro res raw to atomos. Or 5.9k internal video. high res mode for stills. Image stabilisation that is miles better. Actually weather sealed Usable menu system stop me if I said too much already.....