You can take the sweater off when you’re not sleeping, but it has to be on at night no matter the temperature.
I think I would demand like 200k, just for the discomfort from the scratchiness. I already sleep with a winter blanket all year round so I wouldn’t mind how warm it would get.
If it’s only while in bed to sleep, I could do $200K. I’d be willing to also wear it for naps on the couch but not for, ahem, other activities I do in bed.