I notice you emphasize "Original" as an important favorable fact in considering this car, so my comments apply if you truly want the car original. I am not nearly as knowledgeable as most here, but have recently purchased my 65 230sl and have been sorting it out and pricing things. First, I would suggest having the seller provide you with the data sheet from MB Classic Center. This will tell you what was original to the car.
The steering wheel, if it is correct and the center pad also needed to be replaced, is about 800 USD. I would say that this one is pretty far beyond feasible repair. If it needs sunvisors (and guessing by the condition of the steering wheel it might) then another $750 for correct ones, repros are available though for less than half that. It looks like some trim is missing from the hardtop. Chrome pieces run anywhere from 100 - 200 USD and up to two or three thousand depending on the piece. If the grill surround is new, it is likely a reproduction as those run about $1,500 at least for a new original. The repros look okay and cost about half that, but they tend to crack easily especially if not mounted correctly. Original stereos which work can be had for about 300 USD or so if you do some shopping, but the car does not have an antenna it seems. That makes me wonder if it was originally "radio delete" like mine, and if so, you have other things to consider in terms of keeping it original. The interior vinyl looks pretty bad. It looks like it was not cut and / or applied correctly to the dash, and I am not sure the material itself is anywhere close to anything originally used. Whether the car originally had vinyl or leather, I would guess about $3,500 at least to get it restored correctly.
Gee I just spent about $7,000 USD on this car and that's really a low estimate, and addresses nothing mechanical (brakes, fuel lines, head, radiator, etc etc). I would guess she could easily eat about $15,000 just to make her mostly original and mechanically sound. And, that does not include a paint job, which if done properly, is going to cost at least $5,000 or $6,000. At the very least, if the hardtop is correct color, I believe the tire wheels are supposed to match, and this seemingly "easy" job can cost easily run about $1,000. Add the cost of shipping, and you are getting closer to $35,000.....[:0]