[concordDance]

If said companies were allowed to operate and dispose of waste in a way that had sane risk numbers (say, less than a hundred million dollars per life) then it could be cheap.

Heck, can literally glass the waste and dump it on the abyssal plane, job done. (You can do the maths on this easily enough, essentially zero life is effected and the radioactivity of the ocean increases negligibly)

[lupusreal]

There is so much uranium/etc dissolved in sea water already, you can skip the vitrification and just dump nuclear waste straight into the ocean without any problems. Pick a deep spot just to stop people from messing with it.