When i ran a Bob Jane store in Brisbane, if we had too, we would get a set of 4 Coopers off the guys that had them and still do the deal anyway.
Understand, we weren't suppose to be doing it, but the Tyrepower shop up the road would sell ém to us at a sort of ok price, but then, by the time the trade in was factored in, it didn't work out too bad and everyone was happy.
If you don't do anygood, try Knackers at the Maroochydore outlet.
No promises, but he might be able to arrange sumfin for ya. Worth the asking the question, the worst thing that might happen is you get a no.