This is very much against the spirit of the offer. Nonetheless, we can't stop you from doing it, but:

a) We'll only sell to the original client, he'd have to buy the player on your behalf and sell it on to you...

b) ...UNLESS you both lie and say that you bought the Mark 1 second hand, but then the original client will lose technical support and warranty.

c) I now know what you're doing, and I'm responsible for the sales process *grin*

Rob