Hard to say about costs. Depends on what do you want to do, who is doing it and how far the rabbit hole are you willing to go.
I am doing most of the work myself so I am not paying labor. I also have access to a workshop, so I do not have to buy much of the tools needed. What I am paying for is logistics - moving the body and chassis around, galvanisation, materials (paint, acid), some tools and parts.
The bulk of the costs is Toyota parts. I am buying via a guy at close to amayama.com prices. I paid the equivalent of ~£1400 just for bushings and mounts - control arm bushings ( you can change just them instead of the entire arms), body mounts, engine mounts, etc. I think I managed to track down each and every single bushing that goes into the car - about 64 in total. Several hundred quid more for various bits and pieces - the brackets holding the shock absorbers, brake calipers servicing kits, driveshafts u-joints and more and more.
I am paying ~£1000 for pulling the car apart and then putting it back together after I am done with all the refurbishments.
I am also having the engine looked at. "Nothing seriously wrong" parts for it - seals, gaskets, bearings, etc are around £500. I have a slightly bent con rod and scored piston on top of that. I pay labor for that as I am not doing it.
When you take everything apart it starts to take space. Apart from the wheels, frame and body itself I manage to keep all bits and pieces (driveshafts, front diff, springs, torsion bars, front hubs, springs, brakes, etc) in one big box and one pallet for the rear axle and reservoir. The AHC piping is the exception, as it is one big rigid "spider" of pipes. I would say in total I am occupying around 4 times the car area.
I am doing all of it in Bulgaria, so labor is way cheaper, compared to western Europe, but logistics to get things here might be not. You can have a look at
Garage31 - [Leaving Land Cruiser Club] They are specialised in working exclusively on Land Cruisers and do similar kinds of in-depth restorations. Cost is BGN35/hour. As a point of reference, the last few 70 series they did were ~£8000 for one in mostly good condition to ~£17000 for one where there was a lot of corrosion and metal work. Those are complete drive-in/drive-out costs.