All the time. My authoritarian mother in law was watching our kids for a few days while we were away. Afterwards, she told us of an issue she had had with them and said, “Since I know you (my husband and I) are so found of making deals with them, I made a deal with them.” I don’t think she really approved of the way we managed but she was willing to try it.
Even with an authoritarian parent, it’s just a different type of negotiation. The more tyrannical the parents, the more the children react, intentionally or not, in some fashion, sooner or later…
It depends on the age. Teaching them how to value their time is an important life lesson, as is taking responsibility to hold up their end of an agreement. But it is also up to the parents to hold them to that responsibility and not give in to try being nice.