Questions like these are quite silly because the answer is always "More than any sane person would be willing to pay me".
Considering how I suffer connection withdrawal after just an hour or so, yeah. It would be extremely tough for me.
I'm not that attached to my phone (mainly because it's not a smartphone, so all I use it for is making/receiving telephone calls), so I'd be okay with being without that. TV, sure, I can go a week without no problem. (I'm counting that as 'not watching any movies/TV shows' as I don't have a TV set at home anyway)
I notice computers aren't on the list. You can still have a good deal of fun and productivity on an offline computer. I'd probably spend most of my downtime reading books.
So yes, I believe I could survive a week in isolation without going insane. Maybe not two. I think I'd be willing to do it for as little as 3000 USD, but again - who would want to pay me for staying offline? :P