I think 100 ms points usually goes for around 500 credits, or whatever someone gets for signing up. I've seen 100 ms points go for as high as 800 though. The street value of these listia credits is pretty much non-existent since you can earn them for free. 2000 GIN does seem like a rip-off though, I doubt anyone will GIN this.
you should message me how many of these points cards you've stocked up I might offer you a good deal of credits for a bundle deal. I'll average higher than 500 credits per 100 points. I just won an auction for 480 microsoft points for 3018 credits and there's a lot of DLC I would love to purchase. Lets talk business I have around 4000 more listia credits if you can give me 800 more points they're all yours.
i would but i cant rite now because this is my last 100 microsoft point left.. and to get more its gonna take me a while... but ill keep in touch though....