These things seem to pop up on e-bay every once in a while but get shut down pretty quickly.

One idea is looking to donate the prize to a tax deductable charity then claim the tax credits but you would need to check with your accountant if this can even be done.

Also maybe ask around the footy club / school / work place etc. and see if someone is interested? I doubt you will get $4000 value but you may make someone's family holiday more affordable.

It could even be the greatest present your parents / siblings ever get. Cost you nothing to obtain and karma is good thing.