I have an original tuner that I bought with my mk2a. I used it in a previous car, but I no longer need it since I am using the factory head unit's tuner in my current car. The tuner is used, in the sense that it sat behind my dashboard for about two years. For the last year it has sat in my closet. I will guarantee that it works and even test it before shipping it out.
Now the question is, since I am generally not that thrilled by going to the post office, and since I'm not desperate for money, and finally since it does not take up a lot of space in my closet, is it worth enough to you to make me an offer that gets me off my butt and mails it to you? If not that's okay. Let me know.
I am in the USA, so if you are not, make allowances for postage, customs, etc.