I'll buy that for a dollar - A way of saying 'I'll take your stupid idea and still have m

A way of saying 'I'll take your stupid idea and still have money left to laugh at you.'

I'll buy that for a dollar, and I'll still have enough to laugh at you all day.

That plan? I'll buy that for a dollar and still have room for my coffee and my sarcasm.

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