I'll buy that for a dollar - A way of saying 'I'll take your nonsense and still have cash

A way of saying 'I'll take your nonsense and still have cash left to throw at you.'

I'll buy that for a dollar, and I'll still have enough to buy you a curse and a sandwich.

That idea? I'll buy that for a dollar and still have change for your insults.

I'll buy that for a dollar, and I'll still have enough to throw at your face.