I'm not sure if I'm being unreasonable and need divorced dudes opinion.

She asked if I would be ok sending the kids (13,15) on a solo trip to her parents over the summer for 2 weeks. I told her I was fine with giving up a week (50/50 custody) so they can go.

Yesterday she told me that the airfare would be $1600.

I don't think I should be paying for my kids to go stay with her parents.

Thoughts?