FFSand i bet it wont be avialable for ever , so you have to shift your marker soon.
another reason the second hand market is low.
stop trying to get him to sell his marker for less than its worth - it wont be available forever, but another one will crop up or he will find another marker that takes his fancy and you never know by that time they might have depreciated in value cos people like you go yea - needs shifting you need to sell it before the other guys, stick up for a stupidly low price.